United Utilities 6-K Notification of Transactions of Directors, Persons Discharging Managerial Responsibility or Connected Persons

Exhibit 99.6

NOTIFICATION OF TRANSACTIONS OF DIRECTORS, PERSONS DISCHARGING MANAGERIAL RESPONSIBILITY OR CONNECTED PERSONS

This form is intended for use by anissuerto make aRISnotification required byDR 3.1.4R(1).

(1)	Anissuermaking a notification in respect of a transaction relating to thesharesor debentures of theissuershould complete boxes 1 to 16, 23 and 24.
(2)	Anissuermaking a notification in respect of a derivative relating thesharesof theissuer should complete boxes 1 to 4, 6, 8,13, 14, 16, 23 and 24.
(3)	Anissuermaking a notification in respect of options granted to adirector/person discharging managerial responsibilitiesshould complete boxes 1 to 3 and 17 to 24.
(4)	Anissuermaking a notification in respect of afinancial instrumentrelating to theshares of theissuer(other than a debenture) should complete boxes 1 to 4, 6, 8, 9, 11, 13, 14, 16, 23 and 24.

Please complete all relevant boxes should in block capital letters.

1.	Name of theissuer	2.	State whether the notification relates to (i) a transaction notified in accordance withDR 3.1.4R(1)(a); or
			(ii)DR3.1.4(R)(1)(b) a disclosure made in accordance with section 324 (as extended by section 328) of the Companies Act 1985; or
			(iii) both (i) and (ii)
	UNITED UTILITIES PLC		both (i) and (ii)
3.	Name ofperson discharging managerial responsibilities/ director	4.	State whether notification relates to apersonconnected with aperson discharging managerial responsibilities/directornamed in 3 and identify theconnected person
	NICHOLAS ROBIN SALMON		NICHOLAS ROBIN SALMON
5.	Indicate whether the notification is in respect of a holding of theperson referred to in 3 or 4 above or in respect of a non-beneficial interest	6.	Description ofshares(includingclass), debentures or derivatives or financial instruments relating toshares
	NICHOLAS ROBIN SALMON		UNITED UTILITIES PLC ORDINARY SHARES OF £1 EACH
7.	Name of registered shareholders(s) and, if more than one, the number ofshares held by each of them	8	State the nature of the transaction
	ZERO		PURCHASE OF ORDINARY SHARES

9.	Number ofshares, debentures or financial instruments relating tosharesacquired	10.	Percentage of issuedclass acquired (treasury sharesof thatclassshould not be taken into account when calculating percentage)
	1,300 ORDINARY SHARES		0.00015%
11.	Number ofshares, debentures or financial instruments relating tosharesdisposed	12.	Percentage of issuedclass disposed (treasury sharesof thatclassshould not be taken into account when calculating percentage)
	N/A		N/A
13.	Price pershareor value of transaction	14.	Date and place of transaction
	744 PENCE PER SHARE		23RDMARCH 2007 ENGLAND
15.	Total holding following notification and total percentage holding following notification (anytreasury shares should not be taken into account when calculating percentage)	16.	Date issuer informed of transaction
	ORDINARY SHARES 1,300		23RD MARCH 2007
	TOTAL 1,300 (0.00015%)

If aperson discharging managerial responsibilitieshas been granted options by theissuercomplete the following boxes

17	Date of grant	18.	Period during which or date on which it can be exercised
19.	Total amount paid (if any) for grant of the option	20.	Description ofsharesor debentures involved (class and number)
21.	Exercise price (if fixed at time of grant) or indication that price is to be fixed at the time of exercise	22.	Total number ofsharesor debentures over which options held following notification
23.	Any additional information	24.	Name of contact and telephone number for queries
			Paul Davies 01925 237051

Name and signature of duly authorised officer ofissuerresponsible for making notification

PAUL DAVIES ASSISTANT GROUP SECRETARY

Date of notification 23^RDMARCH 2007