1
                                                                    Exhibit 99.3

                   
                   UNAUDITED PRO FORMA FINANCIAL INFORMATION

The unaudited pro forma statements of operations for the year ended December
31, 1998 and for the quarter ended March 31, 1999 have been prepared to
illustrate the effect of the acquisition of LucasVarity as if the acquisition   
had occurred on January 1, 1998 and January 1, 1999, respectively.  Synergies
and expected cost savings from the integration of LucasVarity with TRW's
previously existing businesses have not been included in the pro forma
statements of operations.

The unaudited pro forma statement of operations presented for the year ended    
December 31, 1998 includes the historical financial results for the year ended
December 31, 1998 for TRW and the year ended January 31, 1999 for LucasVarity.
The unaudited pro forma statement of operations presented for the quarter ended
March 31, 1999 includes the statement of operations for the quarter ended March
31, 1999 for TRW and the fourth quarter ended January 31, 1999 for LucasVarity.
Unusual and/or one-time items recorded in the two month period ended March 31,
1999 for LucasVarity included primarily the investment banker fees of $21
million relating to the acquisition of LucasVarity by the Company.  The
historical statements of operations for LucasVarity have been presented using
U.S. Generally Accepted Accounting Principles (U.S. GAAP). The statements were
translated from British pounds to U.S. dollars using an average exchange rate
for the applicable period.

The unaudited pro forma statements of operations include the adjustments that
have a continuing impact, to reflect the transaction using purchase accounting.
The pro forma adjustments are described in the notes to the unaudited pro forma
statements of operations. The adjustments are based upon preliminary information
and certain management judgments. Certain reclassifications have been reflected
to conform to TRW's presentation. The purchase accounting adjustments are
subject to revisions which will be reflected in future periods. Revisions, if
any, are not expected to have a material effect on the statement of operations
or financial condition of the Company. 

The unaudited pro forma statements of operations are presented for illustrative
purposes only and are not necessarily indicative of the results of operations
which may occur in the future, or that would have occurred if the acquisition
had been consummated on January 1, 1998 and January 1, 1999 for the statements
of operations for the year ended December 31, 1998 and the quarter ended March
31, 1999, respectively. The unaudited pro forma statements of operations should
be read in conjunction with the consolidated financial statements and notes
thereto included in the Company's Annual Report on Form 10-K for the year ended
December 31, 1998, the consolidated condensed unaudited financial statements and
the notes thereto included in the Company's Quarterly Report on Form 10-Q for
the quarter ended March 31, 1999 and the consolidated financial statements and
notes thereto of LucasVarity plc for the year ended January 31, 1999 filed as
Exhibit 99.2 to this report.


                                      D-1
   2

             Unaudited Pro forma Statement of Operations
                For the Year Ended December 31, 1998
                (In millions, except per share data)





                                                          TRW            LucasVarity
                                                      Historical as     Historical as         Pro Forma         Adjusted
                                                        Reported          Reported            Adjustments          TRW
                                                      -------------     -------------         -----------       --------
                                                                                                         
Sales                                                    $11,886            $7,088             $ (10)  (a)       $18,964

Cost of sales                                              9,715             5,542                93   (b)        15,350
                                                         -------            ------             -----             -------
Gross profit                                               2,171             1,546              (103)              3,614

Administrative and selling expenses                          826               495                --   (c)         1,321

Research and development expenses                            522               305               (62)  (d)           765

Interest expense                                             114                58               450   (f)           622

Other expense (income) - net                                 (37)             (180)               (5)  (g)          (222)
                                                         -------            ------             -----             -------
Earnings from continuing

  operations before income taxes                             746               868              (486)              1,128



Income taxes                                                 269               315              (182)  (h)           402
                                                         -------            ------             -----             -------
Earnings from continuing operations                      $   477            $  553             $(304)            $   726
                                                         =======            ======             =====             =======
PER SHARE OF COMMON STOCK

Diluted

  From continuing operations                             $  3.83                                                 $  5.84

Basic

  From continuing operations                             $  3.93                                                 $  5.98


SHARES USED IN COMPUTING

PER SHARE AMOUNTS

Diluted                                                    124.4                                                   124.4


Basic                                                      121.3                                                   121.3





See Notes to the Unaudited Pro forma Statement of Operations


                                      D-2
   3
                  Unaudited Pro forma Statement of Operations
                      For the Quarter Ended March 31, 1999
                      (In millions, except per share data)






                                                          TRW           LucasVarity
                                                     Historical as     Historical as        Pro Forma          Adjusted
                                                        Reported          Reported         Adjustments           TRW
                                                     -------------     -------------       -----------         --------
                                                                                                         
Sales                                                    $3,097            $1,733            $(107)  (a)        $4,723

Cost of sales                                             2,618             1,340              (15)  (b)         3,943
                                                         ------            ------             ----              ------
Gross profit                                                479               393              (92)                780


Administrative and selling expenses                         184               123              (14)  (c)           293

Research and development expenses                           144                81              (21)  (d)           204

Purchased in-process research and development                85                --              (85)  (e)            -- 

Interest expense                                             43                10              106   (f)           159

Other expense (income) - net                                 16              (152)             (31)  (g)          (167)
                                                         ------             -----             ----              ------
Earnings from continuing

  operations before income taxes                              7               331              (47)                291



Income taxes                                                 35               117              (49)  (h)           103
                                                         ------            ------             ----              ------


Earnings (loss) from continuing operations               $  (28)           $  214             $  2              $  188
                                                         ======            ======             ====              ======

PER SHARE OF COMMON STOCK

Diluted

  From continuing operations                             $(0.24)                                                $ 1.53


Basic

  From continuing operations                             $(0.24)                                                $ 1.56

SHARES USED IN COMPUTING


PER SHARE AMOUNTS


Diluted                                                   120.1                                                  122.9


Basic                                                     120.1                                                  120.1






See Notes to the Unaudited Pro forma Statement of Operations



                                      D-3
   4
           NOTES TO THE UNAUDITED PRO FORMA STATEMENTS OF OPERATIONS

(a)      Sales were adjusted to reflect the elimination of sales between TRW and
         LucasVarity of $10 million for the year ended December 31, 1998 and $1
         million for the quarter ended March 31, 1999. In addition, Sales for
         the quarter ended March 31, 1999, were adjusted to eliminate $106
         million of LucasVarity sales included in the "TRW Historical as
         Reported" amount for the period subsequent to the date of acquisition
         (March 25, 1999) to March 31, 1999. 

(b)      Cost of sales is adjusted to reflect the net amount of the following
         adjustments:



                                                                                                Quarter
                                                                    Year Ended                   Ended
                                                                 December 31, 1998           March 31,1999
                                                                 -----------------           -------------           
                                                                                         
         Elimination of LucasVarity Cost of sales included
         in the "TRW Historical as Reported" amount                  $ --                       $(84)
 
         Reclassification of restructuring cost
         reported in LucasVarity historical accounts
         from Other expense (income)-net                               73                         42

         Reclassification of engineering expenses
         from Research and development expenses to
         conform with TRW's presentation                               62                         21

         Elimination of goodwill amortization reported
         in LucasVarity historical amounts                            (55)                       (12)

         Additional depreciation resulting from the 
         write-up of fixed assets to fair value. The 
         assets are depreciated over their estimated 
         useful lives, primarily from 8 to 20 years. 
         The adjustment also includes the reduction in
         earnings to reflect the adjustment of the
         fair market value of inventory                                32                         23

         Capitalization of entry fees associated with
         an investment for aerospace partnering
         arrangements                                                 (17)                        (6)

         Elimination of the cost and profit for sales 
         between LucasVarity and TRW                                  (10)                        (1)

         Adjustment for LucasVarity pension expense to
         reflect the actuarial valuation as of the
         acquisition date                                               8                          2
                                                                     ----                       ----

                                                                     $ 93                       $(15)
                                                                     ====                       ====


(c)      Elimination of LucasVarity Administrative and selling expenses of $14 
         million included in the "TRW Historical as Reported" amount for the 
         quarter ended March 31, 1999.

(d)      Reclassification of $62 million and $21 million of engineering costs to
         Cost of sales for the year ended December 31, 1998 and the quarter
         ended March 31, 1999, respectively, to conform with TRW's presentation.

(e)      Elimination of the charge for Purchased in-process research and
         development of $85 million in the quarter ended March 31, 1999
         reported in connection with the acquisition of LucasVarity. Although
         the charge is part of the purchase price allocation, it has been
         excluded from the pro forma adjusted TRW amounts because it does not
         have a continuing impact on the Statement of Operations.

(f)      Interest expense is adjusted to reflect the net amount of the following
         adjustments:



                                                                                               Quarter
                                                                         Year Ended             Ended
                                                                      December 31, 1998      March 31, 1999
                                                                      -----------------      --------------
                                                                                          
         Increase in interest expense to reflect the             
         cash purchase price of LucasVarity                                 $ 418               $  93
                                                                 
         Reclassification of LucasVarity's interest 
         income to Other expense(income)-net                                   32                  13
                                                                              ---                 ---
                                                                 
                                                                            $ 450               $ 106
                                                                              ===                 ===



                                      D-4
   5
(g)      Other expense (income)-net is adjusted to reflect the net amount of the
         following adjustments:


                                                                                                Quarter
                                                                  Year Ended                     Ended
                                                              December 31, 1998              March 31, 1999
                                                              -----------------              --------------
                                                                                       
         Amortization over 40 years of goodwill resulting 
         from the acquisition                                        $ 73                       $ 18

         Reclassification of restructuring costs 
         reported in LucasVarity's historical
         accounts to Cost of sales                                    (73)                       (42)

         Reclassification of  LucasVarity interest 
         income from Interest expense                                 (32)                       (13)

         Amortization of the fair value of identified 
         intangibles over their estimated useful lives                  
         from 16 to 30 years                                           15                          4

         Elimination of the LucasVarity gain on the
         formation of a joint venture with TRW                         12                         --

         Elimination of LucasVarity Other expense 
         (income) - net included in the "TRW 
         Historical as reported" amount                                --                          2
                                                                     ----                       ----
                                                                     $ (5)                      $(31)
                                                                     ====                       ====


(h)      Reduction in income taxes of $182 million and $49 million for the 
         applicable tax effect of the before tax pro forma adjustments to the
         statement of operations for the year ended December 31, 1998 and the
         quarter ended March 31, 1999, respectively. For the year ended
         December 31, 1998, the pro forma adjustments do not reflect a tax cost
         of $20 million which would have occurred if the Company had acquired   
         LucasVarity as of January 1, 1998. The $20 million tax cost represents
         unused foreign tax credits with the assumption that neither TRW nor
         LucasVarity would have paid certain dividends from their respective
         foreign subsidiaries.


Unusual and/or one-time special items included in the historical statements of
operations for TRW and LucasVarity for the year ended December 31, 1998 are
set forth below. Excluding these items, the pro forma adjusted earnings from
continuing operations would have been $579 million, or $4.65 per diluted share.

- -        an after-tax gain of $32 million from the settlement of certain
         patent litigation with the Company

- -        an after-tax charge of $22 million for litigation, contract reserves,
         and severance costs relating to the combination of the Company's
         Systems Integration Businesses with BDM International, Inc., a company
         acquired in 1997

- -        an after-tax charge of $18 million for restructuring primarily for
         plant closings and severance costs for the Company's Automotive
         businesses

- -        an after-tax benefit of $16 million for the Company's interest
         accrual adjustment for tax litigation settlement

- -        an after-tax charge for LucasVarity of $21 million for costs 
         incurred for its proposed change of domicile

- -        an after-tax loss of $10 million recognized upon the termination of
         LucasVarity's interest rate swap portfolio


                                      D-5
   6

- -        net after-tax gains of $206 million relating to the sale of businesses
         during the year, including LucasVarity's heavy vehicle braking business

- -        after-tax charges of $36 million for restructuring related to
         LucasVarity's automotive businesses for the closure of two plants and
         severance costs and the loss associated with the termination of a
         product line within the aerospace business.

Unusual and/or one-time special items included in the historical statements of
operations for TRW and LucasVarity for the quarter ended March 31, 1999 are set
forth below. Excluding these items, the pro forma adjusted earnings from
continuing operations and earnings per diluted share would have been $132
million and $1.07, respectively.

- -        after-tax gains of $19 million from the issuance of stock by RF Micro 
         Devices, Inc., an affiliate of TRW, and $10 million from the Company's
         concurrent sale of stock of the affiliate

- -        an after-tax charge of $28 million for the Company's losses from a
         commercial fixed price contract and a capped cost reimbursable contract
         for the U.S. Army

- -        a non-recurring after-tax loss of $33 million on foreign currency
         hedges relating to the acquisition of LucasVarity

- -        an after-tax charge of $8 million for the underwriting and
         participation fees incurred to secure committed credit facilities and 
         the cost of the unutilized credit line in anticipation of the Company's
         acquisition of LucasVarity

- -        an after-tax charge of $7 million for severance costs relating to 
         the restructuring of the Company's automotive businesses

- -        a cost of $85 million, with no income tax benefit, for the valuation
         of in-process research and development associated with the Company's
         acquisition of LucasVarity. The cost is eliminated as a pro forma
         adjustment

- -        an after-tax gain of $129 million principally related to the sale of
         LucasVarity's heavy vehicle braking system business

- -        an after-tax charge of $26 million for restructuring for the
         automotive business of LucasVarity including the closure of two plants
         and severance costs.

On May 17, 1999, the Company announced that it will divest its engine
businesses, which consist of TRW Engine Components and Lucas Diesel Systems
operations; TRW Nelson Stud Welding; and the LucasVarity Wiring companies. The
estimated net proceeds from these divestitures of $1.2 to $1.5 billion will be
applied to reduce debt incurred to finance the acquisition of LucasVarity. The
unaudited pro forma statements of operations for the year ended December 31,
1998 and the quarter ended March 31, 1999 included sales of $1,980 million and
$485 million, respectively, relating to the businesses to be sold. The results
of operations of the businesses to be divested will be reported in Earnings of
continuing operations up to the date of their disposition. TRW expects to
complete the divestitures of these businesses by year-end 1999.


                                      D-6
   7
                       Unaudited Balance Sheet
                        As of March 31, 1999
                           (In millions)


The following unaudited balance sheet of TRW includes the acquisition of
LucasVarity accounted for as a purchase. The March 31, 1999 unaudited balance
sheet of the Company includes the accounts of the Company and LucasVarity. The
balance sheet also reflects a preliminary purchase price allocation based upon
the estimated fair value of assets and liabilities as of the date of
acquisition. A pro forma balance sheet is not included as the unaudited balance
sheet of TRW as of March 31, 1999 includes LucasVarity.




                                                                    TRW
                                                                     as
                                                                  Reported
                                                                  --------
                                                                  
Assets
Current Assets
      Cash and cash equivalents                                  $  1,058
      Accounts receivable                                           2,826
      Inventories                                                   1,123
      Prepaid expenses                                                275
      Net assets of acquired businesses held for sale                 739
      Deferred income taxes                                           326
                                                                 --------
Total current assets                                                6,347

Property, plant, and equipment - on the basis of cost               7,986
      Less accumulated depreciation and amortization                3,890
                                                                 --------
Total property, plant and equipment - net                           4,096

Intangible Assets
      Intangibles arising from acquisitions                         3,759
      Other                                                           780
                                                                 --------
                                                                    4,539
      Less accumulated amortization                                   150
                                                                 --------
Total intangible assets - net                                       4,389

Investments in affiliated companies                                   335
Other notes and accounts receivable                                   349
Prepaid pension cost                                                2,198
Other assets                                                          437
                                                                 --------
                                                                 $ 18,151
                                                                 ========

Liabilities and shareholders' investment
Current liabilities
      Short-term debt                                            $  1,837
      Short-term payable for LucasVarity plc                        2,899
      Accounts payable                                              1,614
      Current portion of long-term debt                               677
      Other current liabilities                                     1,890
                                                                 --------
Total current liabilities                                           8,917
Long-term liabilities                                               1,764
Long-term payable for LucasVarity plc                               3,359
Long-term debt                                                      1,663
Long-term deferred income taxes                                       590
Minority interests in subsidiaries                                    131
                                                              
Shareholders' investment                                      
    Capital stock                                                      75
    Other capital                                                     459
    Retained earnings                                               1,991
    Treasury shares - cost in excess of par value                    (625)
    Accumulated other comprehensive (loss)                           (173)
                                                                 --------
Total shareholders' investment                                      1,727
                                                                 --------
                                                                 $ 18,151
                                                                 ======== 

                                                            
On May 17, 1999 the Company announced that it will divest its engine businesses,
which consist of TRW Engine Components and Lucas Diesel Systems operations; TRW
Nelson Stud Welding; and the LucasVarity Wiring Companies. The net operating
assets of the LucasVarity businesses to be sold of $739 million as of March 31,
1999 are included in the caption "Net assets of acquired businesses held for
sale." The net assets of the TRW businesses to be sold are approximately $330
million and are reported in their respective balance sheet accounts.


                                      D-7
   8
Purchase Price Allocation of LucasVarity

The assets and liabilities of LucasVarity have been consolidated with TRW
based upon the fair value of assets and liabilities. The fair value of
employee benefit assets and liabilities were determined by a preliminary
actuarial valuation. A preliminary allocation of the cash purchase price of
$6,778 million is as follows:

                                       

                                               LucasVarity
                                                 as of
                                             March 31, 1999
                                              (in millions)
                                               -----------
                                              
         Cash and cash equivalents               $   774
         Accounts receivable                         888
         Inventory                                   552
         Net assets of businesses 
              held for sale                          739
         Other current assets                        285
                                                 -------
         Total current assets                      3,238
                                                   
         Property, plant and equipment             1,531
         Intangible assets                           413
         Prepaid pension costs                     2,198
         Other assets                                414
                                                 -------
                                                   
         Total assets                            $ 7,794
                                                 ======= 

         Accounts payable                        $  (686)
         Other accruals                             (798)
         Debt                                       (938)
         Long-term liabilities                      (932)
         Long-term deferred taxes                   (631)
                                                 -------
                                                   
         Total liabilities                       $(3,985)
                                                 =======

         Minority Interests                      $   (39)
                                                 =======
         Purchased in-process research             
         and development                         $    85
                                                 =======
         Excess of purchase price over fair         
         value of net assets acquired            $ 2,923
                                                 =======


The purchase price allocation is preliminary and is subject to the final
appraisal and resolution of preacquisition contingencies and restructuring.


                                      D-8