PRESS RELEASE                                 LIFE SCIENCES RESEARCH, INC.
                                              (Other OTC:LSRI)
                                              PO Box 2360
                                              Mettlers Road
                                              East Millstone, NJ 08875-2360

                                       For Further Information:
                                       Richard Michaelson
                                       Phone:   US: (732) 649-9961
                                       e-mail: LifeSciencesResearch@LSRinc.net


November 7, 2006

                       LSR ANNOUNCES THIRD QUARTER RESULTS

         Highlights:
o    Revenues of $49.5 million.
o    Net Income of $2.7 million, or $0.18 per fully diluted share.
o    Net new orders of $58.0 million

East  Millstone,  New Jersey,  November 7, 2006 - Life Sciences  Research,  Inc.
(Other OTC: LSRI)  announced today that revenues for the quarter ended September
30, 2006 were $49.5 million, 13.0% above the revenues for the same period in the
prior year of $43.8  million.  Excluding the effect of exchange rate  movements,
revenues  increased 8.7%.  Operating  income for the quarter ended September 30,
2006 was $5.7 million,  or 11.6% of revenues,  compared  with $5.7  million,  or
13.0% of revenues  for the same period in the prior year.  The Company  reported
net income for the quarter  ended  September  30, 2006 of $2.7 million  compared
with $1.1  million for the quarter  ended  September  30,  2005.  Net income per
common share for the quarter ended  September  30, 2006 was $0.21  compared with
$0.09 in the quarter  ended  September  30, 2005.  Net income per fully  diluted
share was $0.18 for the current quarter compared to $0.08 in the prior year.

The net income for the three  months ended  September  30, 2006  included  Other
Expenses  of $0.9  million  which  comprised  finance  arrangement  fees of $0.5
million  and the  non-cash  cost of $0.7  million  associated  with the  100,000
warrants granted in January 2005 for advisory  services,  offset by $0.3 million
from a  non-cash  foreign  exchange  remeasurement  gain  pertaining  to the New
Financing denominated in US dollars. In the same period in the prior year, Other
Expenses of $1.8 million  were  comprised  of finance  arrangement  fees of $1.2
million, and $0.6 million from the non cash foreign exchange  remeasurement loss
pertaining to the Convertible Capital Bonds.  Excluding these Other Expenses and
related  tax  effect,  non-GAAP  net income  for the  current  quarter  was $2.7
million,  or $0.19 per fully diluted share,  compared to $3.2 million,  or $0.22
per fully diluted share in the prior year.

Net days sales  outstanding  at September  30, 2006 were 15 (21 at September 30,
2005 and 16 at December 31, 2005).  Capital  expenditure totaled $4.2 million in
the third  quarter of 2006,  compared  to $5.1  million in the third  quarter of
2005.

Cash on hand at September 30, 2006 was $38.3 million compared with $15.4 million
at December 31,  2005.  The  increase in cash on hand was  primarily  due to the
March 2006 $70  million  New  Financing  Loan which  generated  net  proceeds of
approximately  $63  million,  of which  $46.2  million  was used to  redeem  the
outstanding  principal amount of the Convertible  Capital Bonds.  Long-term debt
was $91.1  million at September 30, 2006 compared with $30.4 million at December
31, 2005. At September 30, 2006  long-term debt  predominantly  consisted of the
$70  million  New  Financing  Loan  and the  $22.8  million  of  finance  leases
associated  with the sale and leaseback,  offset by  unamortized  lender warrant
costs.

Revenues for the nine months  ended  September  30, 2006 of $139.8  million were
5.9% above  revenues  for the same  period in the prior year of $132.0  million.
Excluding  the  effect  of  exchange  rate  movements,  the  increase  was 6.9%.
Operating Income for the nine months ended September 30, 2006 was $14.6 million,
or 10.5% of revenues,  compared with $16.3 million, or 12.3% of revenues for the
same  period in the prior  year.  The  Company  reported  net income  before the
cumulative  effect of the accounting  change for the nine months ended September
30, 2006 of $4.3 million,  compared with $2.0 million for the same period in the
prior year. Net income per fully diluted share before the  cumulative  effect of
the  accounting  change for the nine months ended  September  30, 2006 was $0.29
compared with $0.14 for the same period in the prior year.

Concurrently with the repayment of the $10 million promissory note that was owed
to the Company by Alconbury Estates from the Sale and Leaseback transaction that
was announced in June 2005,  FIN46R  consolidation  accounting  ceased effective
June 30, 2006.  As a result,  the Company  recognized a charge in the period for
the cumulative  effect of the accounting  change of $20.7 million,  of which the
largest  charge is associated  with the non-cash  write-down of the Company's UK
facilities.

The net income before the cumulative effect of the accounting change in the nine
months ended  September  30, 2006  included  Other Income of $0.4 million  which
comprised $4.0 million from the non-cash  foreign  exchange  remeasurement  gain
pertaining to the Convertible Capital Bonds and New Financing  denominated in US
dollars and other exchange gains of $0.2 million,  offset by finance arrangement
fees of $3.1 million  primarily  reflecting  gains of Alconbury  Estates,  LSR's
landlord,  which were  consolidated  under FIN46 and the non-cash  costs of $0.7
million  associated  with the  100,000  warrants  granted  in  January  2005 for
advisory services.  In the same period in the prior year, Other Expenses of $5.2
million  were  comprised  of finance  arrangement  fees of $1.4 million and $3.8
million of a non-cash  foreign  exchange  remeasurement  loss  pertaining to the
Convertible  Capital  Bonds.  Excluding  these  Other  Expenses  and related tax
effect,  non-GAAP  net income  before the  cumulative  effect of the  accounting
change for the nine months ended  September 30, 2006 was $5.0 million,  or $0.34
per fully diluted  share,  compared to $9.4 million,  or $0.65 per fully diluted
share in the prior year.

Capital  expenditure  totaled  $8.2  million in the first  nine  months of 2006,
compared to $12.1 million in the first nine months of 2005.

Net new business  signings  totaled $58.0 million for the third quarter of 2006.
This  represented  an increase of 38% from the third quarter orders in 2005. Net
new business  signings for the nine months ended  September 30, 2006 were $165.5
million,  an  increase  of 21% on the  nine  months  ended  September  2005.  At
September  30, 2006  backlog  (booked on work)  amounted to  approximately  $152
million.

Brian  Cass,  LSR's  President  and  Managing  Director  commented,  "It is very
pleasing to see record levels of orders, revenues,  operating profit and backlog
all being reported this quarter. Net orders of $58.0 million were an increase of
38% on the same quarter last year. On a constant  currency  basis year over year
growth in  orders  was 34%,  within  which our  pharmaceutical  business  growth
accelerated to 36%. These increases reflect our ongoing success in building this
business,  particularly with the top global  pharmaceutical  companies,  and the
continuing strength and growth of the outsourcing market place."

"Our strong orders  performance  throughout 2006 to date has driven the 12 month
trailing book to bill ratio to a satisfying 1.18 and produced backlog growth 32%
year over year to a record  level of $152  million,  both of which are  positive
indicators of future revenue and profit growth."

He added,  "Our continuing  focus on scientific and service  excellence has been
further  enhanced this year with the launch of a global,  seamlessly  integrated
suite of IT solutions for automated  data capture and  reporting,  and providing
customers  direct access to information  via dedicated  extranet  portals.  This
further  strengthens  our  position  as  a  premium  quality,   global  research
organization with a broad, and growing, portfolio of customers."

LSR will hold an investor  conference  call to discuss the quarter's  results on
November  8, 2006 at 9:00 a.m.  Eastern  Time.  That call can be  listened to by
dialing (210) 234-0015 pass code 2089115.  We suggest calling five minutes prior
to the scheduled call.

Life  Sciences  Research,  Inc.  is  a  global  contract  research  organization
providing product development  services to the pharmaceutical,  agrochemical and
biotechnology  industries.  LSR brings  leading  technology  and  capability  to
support its clients in  non-clinical  safety  testing of new  compounds in early
stage development and assessment.  The purpose of this work is to identify risks
to humans, animals or the environment resulting from the use or manufacture of a
wide  range of  chemicals  which  are  essential  components  of LSR's  clients'
products.   The  Company's   services  are  designed  to  meet  the   regulatory
requirements of governments  around the world. LSR operates research  facilities
in the United States (the Princeton  Research Center, New Jersey) and the United
Kingdom (Huntingdon and Eye, England).

This announcement  contains statements that may be forward-looking as defined by
the Private Securities Litigation Reform Act of 1995. These statements are based
largely  on  LSR's  expectations  and are  subject  to a  number  of  risks  and
uncertainties,  certain  of  which  are  beyond  LSR's  control,  as more  fully
described in the Company's  SEC filings,  including its Form 10-K for the fiscal
year ended  December  31,  2005,  as filed with the US  Securities  and Exchange
Commission.


                              - tables to follow -




                  Life Sciences Research Inc. and Subsidiaries
                 Condensed Consolidated Statements of Operations

                                    Unaudited



                                                         Three months ended               Nine months ended
                                                            September 30                    September 30

(Dollars in thousands, except per share data)               2006            2005             2006           2005
                                                                                            
Revenues                                                 $49,460         $43,758         $139,766       $131,993
Cost of sales                                           (36,388)        (31,673)        (103,271)       (95,214)
                                                    -------------    ------------    -------------    -----------
Gross profit                                              13,072          12,085           36,495         36,779
Selling, general and administrative expenses             (7,334)         (6,410)         (21,886)       (20,496)
                                                    -------------    ------------    -------------    -----------
Operating income                                           5,738           5,675           14,609         16,283
Interest income                                              437              21              968             66
Interest expense                                         (3,162)         (2,138)         (10,057)        (5,855)
Other (expense) / income                                   (913)         (1,760)              350        (5,195)
                                                    -------------    ------------    -------------    -----------
Income before income taxes                                 2,100           1,798            5,870          5,299
Income tax benefit / (expense)                               579           (649)          (1,584)        (3,288)
                                                    -------------    ------------    -------------    -----------
Income before cumulative effect of accounting
change                                                    $2,679          $1,149           $4,286          2,011
Cumulative effect of accounting change (net of
income tax benefit of $22,218)                                 -               -         (20,656)              -
                                                    -------------    ------------    -------------    -----------
Net income / (loss)                                       $2,679          $1,149        $(16,370)         $2,011
                                                    -------------    ------------    -------------    -----------

Basic income / (loss) per share
Income / (loss) before cumulative effect of
accounting change                                          $0.21           $0.09            $0.34          $0.16
Cumulative effect of accounting change                         -               -           (1.64)              -
                                                    -------------    ------------    -------------    -----------
Basic income / (loss) per share                            $0.21           $0.09          $(1.30)          $0.16
                                                    -------------    ------------    -------------    -----------
Diluted income / (loss) per share:
Income / (loss) before cumulative effect of
accounting change                                          $0.18           $0.08            $0.29          $0.14
Cumulative effect of accounting change                         -               -           (1.42)              -
                                                    -------------    ------------    -------------    -----------
Diluted income / (loss) per share                          $0.18           $0.08          $(1.13)          $0.14
                                                    -------------    ------------    -------------    -----------

Weighted average number of common stock
- - Basic     (000's)                                       12,669          12,542           12,627         12,506
- - Diluted  (000's)                                        14,534          14,601           14,506         14,521







                  Life Sciences Research Inc. and Subsidiaries
                      Condensed Consolidated Balance Sheets



(Dollars in thousands)                                                September 30,         December 31,
                                                                               2006                 2005
ASSETS                                                                    Unaudited              Audited
                                                                                          
Current assets:
Cash and cash equivalents                                                   $38,315              $15,420
Accounts receivable, net of allowance of $768 and $618 in
    2006 and 2005 respectively                                               30,519               26,810
Unbilled receivables                                                         16,360               11,981
Inventories                                                                   2,354                1,992
Prepaid expenses and other current assets                                    12,263                7,062
                                                                  ------------------     ----------------
Total current assets                                                         99,811               63,265

Property and equipment, net                                                  59,169              105,605
Goodwill                                                                      1,445                1,195
Other assets                                                                  9,195                  901
Unamortized capital bonds issue costs                                             -                   70
Deferred income taxes                                                        35,259               13,333
                                                                  ------------------     ----------------
Total assets                                                               $204,879             $184,369
                                                                  ------------------     ----------------
LIABILITIES AND STOCKHOLDERS' EQUITY/(DEFICIT)
Current liabilities:
Accounts payable                                                            $15,018              $15,742
Accrued payroll and other benefits                                            3,647                3,655
Accrued expenses and other liabilities                                       14,200               15,862
Pension liabilities                                                           5,044                4,635
Short-term debt                                                                 706               46,946
Fees invoiced in advance                                                     38,214               32,920
                                                                  ------------------     ----------------
Total current liabilities                                                    76,829              119,760

Long-term debt                                                               91,131               30,430
Deferred gain on disposal of US property                                      9,187                    -
Pension liabilities, less short-term portion                                 53,038               48,747
                                                                  ------------------     ----------------
Total liabilities                                                          $230,185             $198,937
                                                                  ------------------     ----------------
Commitments and contingencies
Stockholders' equity/(deficit)
Preferred Stock, $0.01 par value.  Authorized 5,000,000
Issued and outstanding: None                                                      -                    -
Non-Voting Common Stock, $0.01 par value.  Authorized 5,000,000
Issued and outstanding: None                                                      -                    -
Voting Common Stock, $0.01 par value.  Authorized 50,000,000
Issued and outstanding at September 30, 2006: 12,670,020
(December 31, 2005: 12,553,251)                                                 127                  126
Paid in capital                                                              82,249               75,848
Less: Promissory notes for the issuance of common stock                        (44)                (205)
Accumulated other comprehensive loss                                       (50,320)             (49,389)
Accumulated deficit                                                        (57,318)             (40,948)
                                                                  ------------------     ----------------
Total stockholders' equity /(deficit)                                      (25,306)             (14,568)
                                                                  ------------------     ----------------
Total liabilities and stockholders' equity /(deficit)                      $204,879             $184,369
                                                                  ------------------     ----------------

<FN>
See Notes to Condensed Consolidated Financial Statements
</FN>




                  Life Sciences Research Inc. and Subsidiaries
                 Condensed Consolidated Statements of Cash Flows
                                    Unaudited


                                                                          Nine months ended September 30
(Dollars in thousands)                                                         2006                 2005
                                                                                         
Cash flows from operating activities:
Net (loss)/income                                                         $(16,370)               $2,011
Adjustments to reconcile net income to net cash provided by
operating activities:
Depreciation and amortization                                                 7,221                7,229
Amortisation of gain on disposal of US property                                (81)                    -
Non-cash compensation expense associated with employee stock
compensation plans                                                              407                    -
Cumulative effect of accounting change                                       42,874                    -
Foreign exchange (gain)/loss on Capital Bonds and New Financing             (4,005)                3,765
Foreign exchange gain on intercompany balances                                (203)                    -
Deferred income tax (benefit)/expense                                      (20,635)                3,288
Provision for losses on accounts receivable                                     150                   79
Amortization of warrants                                                      1,048                  260
Amortization of Capital Bonds issue costs                                        70                  137
Amortization of Financing Costs                                               3,116                1,420

Changes in operating assets and liabilities:
Accounts receivable, unbilled receivables and prepaid expenses                1,183             (13,880)
Inventories                                                                   (211)                  131
Accounts payable, accrued expenses and other liabilities                    (4,712)                2,063
Fees invoiced in advance                                                      2,380              (2,876)
                                                                   -----------------     ----------------
Net cash provided by operating activities                                   $12,232               $3,627
                                                                   -----------------     ----------------
Cash flows used in investing activities:
Purchase of property and equipment                                          (8,152)             (12,084)
Sale of property, plant and equipment                                             6                    -
                                                                   -----------------     ----------------
Net cash used in investing activities                                      $(8,146)            $(12,084)
                                                                   -----------------     ----------------
Cash flows provided by/(used in) financing activities:
Proceeds from issuance of Voting Common Stock                                 5,345                  629
Proceeds from long-term borrowings                                           70,000               30,000
Increase in deferred finance/other assets                                   (8,145)                    -
Repayments of long-term borrowings                                             (71)             (41,106)
Repayments of short-term borrowings                                        (46,553)                (684)
                                                                   -----------------     ----------------
Net cash provided by/(used in) financing activities                         $20,576            $(11,161)
                                                                   -----------------     ----------------

Effect of exchange rate changes on cash and cash equivalents                (1,767)              (1,562)
                                                                   -----------------     ----------------
Increase/(decrease) in cash and cash equivalents                             22,895             (21,180)
Cash and cash equivalents at beginning of period                             15,420               33,341
                                                                   -----------------     ----------------
Cash and cash equivalents at end of period                                  $38,315              $12,161
                                                                   -----------------     ----------------
Supplementary Disclosures
Interest paid in the period                                                  $8,127               $5,392
Taxes paid in the period
           Japan                                                               $123                  $18
           US                                                                  $333                 $298

Supplementary Disclosures of non-cash financing activity:
Issuance of warrants to lender                                               $2,528                    -
Issuance of warrants to financial advisor                                    $1,749                    -