FORM 8.3 DEALINGS BY PERSONS WHO OWN OR CONTROL 1% OR MORE OF ANY CLASS OF RELEVANT SECURITY (Rule 8.3 of The City Code on Takeovers and Mergers) Name of purchaser/vendor * BARCLAYS PLC Company dealt in NORTHGATE Relevant security dealt in ORD GBP 0.05 If a connected EFM, name of offeree/offeror with which connected If a connected EFM, nature of connection # Date of dealing 10 OCTOBER 2005 DEALINGS † Amount bought Price per unit (currency must be stated) 3,871 11.1295 Amount sold Price per unit (currency must be stated) 1,400 11.2500 Resultant total amount and percentage of the same relevant security owned or controlled 1,353,112 (2.10%) IS A SUPPLEMENTAL FORM 8 (DERIVATIVE)/FORM 8 (OPTION) ATTACHED? YES Date of disclosure 11 OCTOBER 2005 Contact name BARCLAYS CORPORATE SECRETARIAT Telephone number 020 7116 2913 * Specify the owner or controller in addition to the person dealing. The naming of nominees or vehicle companies is insufficient. In the case of disclosure of dealings by fund managers on behalf of discretionary clients, the clients need not be named. # See the definition of "connected fund managers and principal traders" in the Definitions Section of the Code. † If disclosing dealings/holdings in derivatives or options, please attach Supplemental Form 8 (Derivative) or Supplemental Form 8 (Option), as appropriate. For details of the Code's dealing disclosure requirements, see Rule 8 and its Notes which can be viewed on the Takeover Panel's website at www.thetakeoverpanel.org.uk. SUPPLEMENTAL FORM 8 (DERIVATIVE) DEALINGS/HOLDINGS IN DERIVATIVES (This form should be attached to Form 8.1, Form 8.1(b)(ii), Form 8.2 or Form 8.3, as appropriate) Description of all derivative products CFD - A purchaser of a CFD will realise disclosed on this form a gain if the price of the underlying security goes up. A seller of a CFD will realise a gain if the price of the underlying security goes down. The CFD contracts are open ended and there is no rollover into new contracts. Full details of any agreement, arrangement None or understanding between the person disclosing and any other person relating to the voting rights or future acquisition or disposal of any relevant securities to which any derivative referred to on this form is referenced. If none, this should be stated. WRITING/ENTERING INTO A DERIVATIVE Product name Transaction Writing/ Number of Reference price Maturity date eg long CFD date entering into securities (currency (indicate as to which the must be stated) applicable) derivative is referenced Long CFD 10/10/2005 Written 1,400 11.2500 Short CFD 10/10/2005 Written 3,871 11.1295 CLOSING OUT A DERIVATIVE Product name Transaction Number of Reference price Closing out price eg long CFD date securities (currency (currency must be to which the must be stated) stated) derivative is referenced DETAILS OF OPEN DERIVATIVES (excluding any transaction set out above) Product name Transaction Written/ Number of Reference price Maturity date eg long CFD date entered into securities (currency (indicate as to which the must be stated) applicable) derivative is referenced Long CFD 06/06/2002 Entered into 9,355 5.3600 Long CFD 12/06/2002 Entered into 9,134 5.4866 Long CFD 13/06/2002 Entered into 9,133 5.4932 Long CFD 14/06/2002 Entered into 9,208 5.3936 Long CFD 18/06/2002 Entered into 9,390 5.3240 Long CFD 19/06/2002 Entered into 9,417 5.3251 Long CFD 28/06/2002 Entered into 9,497 5.2389 Long CFD 02/07/2002 Entered into 9,624 5.1500 Long CFD 09/07/2002 Entered into 9,813 5.1082 Long CFD 11/07/2002 Entered into 10,079 4.8573 Long CFD 12/07/2002 Entered into 10,372 4.8200 Short CFD 18/10/2002 Entered into 12,622 3.9700 Short CFD 22/10/2002 Entered into 12,557 3.9500 Short CFD 23/10/2002 Entered into 12,589 3.9550 Short CFD 15/11/2002 Entered into 13,477 3.7018 Short CFD 27/11/2002 Entered into 12,019 4.1200 Short CFD 05/12/2002 Entered into 12,376 4.0347 Long CFD 28/02/2003 Entered into 29,382 4.9307 Short CFD 28/02/2003 Entered into 29,382 4.9307 Long CFD 16/06/2003 Entered into 10,331 4.8797 Long CFD 17/06/2003 Entered into 11,126 4.8900 Long CFD 20/06/2003 Entered into 9,921 5.0250 Long CFD 24/06/2003 Entered into 9,871 5.0811 Long CFD 25/06/2003 Entered into 14,853 5.1187 Long CFD 01/07/2003 Entered into 37,959 5.2250 Long CFD 07/07/2003 Entered into 33,974 4.8950 Long CFD 11/07/2003 Entered into 10,256 4.7948 Long CFD 14/07/2003 Entered into 35,022 4.8048 Long CFD 16/07/2003 Entered into 12,480 4.8200 Long CFD 17/09/2003 Entered into 9,335 5.3500 Long CFD 19/09/2003 Entered into 11,050 5.2900 Long CFD 29/09/2003 Entered into 67,084 5.2600 Long CFD 06/10/2003 Entered into 10,000 5.4200 Short CFD 12/11/2003 Entered into 22,092 5.6411 Short CFD 15/01/2004 Entered into 21,815 5.8145 Short CFD 20/02/2004 Entered into 34,192 5.8500 Long CFD 03/06/2004 Entered into 7,915 6.3209 Long CFD 22/06/2004 Entered into 18,382 6.7900 Long CFD 29/09/2004 Written 462 7.0500 Long CFD 30/09/2004 Written 200 6.9700 Long CFD 01/10/2004 Written 322 6.9350 Short CFD 05/10/2004 Entered into 17,206 7.2228 Short CFD 05/10/2004 Entered into 10,296 7.2228 Short CFD 06/10/2004 Entered into 11,457 7.1371 Short CFD 13/10/2004 Entered into 63,103 6.9930 Short CFD 13/10/2004 Entered into 22,946 7.0430 Short CFD 13/10/2004 Entered into 58,616 6.9930 Short CFD 13/10/2004 Entered into 21,315 7.0430 Short CFD 14/10/2004 Entered into 16,017 6.9977 Short CFD 14/10/2004 Entered into 14,878 6.9977 Long CFD 19/10/2004 Written 1,279 7.3543 Long CFD 20/10/2004 Written 352 7.3600 Long CFD 22/10/2004 Written 822 7.4150 Long CFD 28/10/2004 Written 1,812 7.3681 Short CFD 29/10/2004 Entered into 2,379 7.4076 Long CFD 29/10/2004 Written 300 7.4533 Long CFD 01/11/2004 Written 494 7.5450 Short CFD 02/11/2004 Entered into 8,109 7.4391 Long CFD 03/11/2004 Written 1,871 7.4949 Long CFD 08/11/2004 Written 500 7.6800 Short CFD 09/11/2004 Entered into 1,555 7.6896 Long CFD 11/11/2004 Written 45 7.7551 Long CFD 16/11/2004 Written 623 7.7650 Short CFD 16/11/2004 Written 641 7.7450 Long CFD 19/11/2004 Written 600 7.7950 Long CFD 22/11/2004 Written 1,218 7.7092 Short CFD 23/11/2004 Entered into 12,965 7.6523 Short CFD 23/11/2004 Written 300 7.7000 Short CFD 24/11/2004 Entered into 7,630 7.6875 Short CFD 26/11/2004 Written 481 7.7600 Short CFD 29/11/2004 Written 1,053 7.8436 Short CFD 30/11/2004 Written 1,156 7.8340 Short CFD 01/12/2004 Written 2,284 7.8685 Short CFD 02/12/2004 Written 923 7.9100 Long CFD 03/12/2004 Written 1,335 7.9525 Short CFD 03/12/2004 Written 141 7.8400 Short CFD 10/12/2004 Written 754 7.9050 Short CFD 13/12/2004 Entered into 6,277 7.9600 Short CFD 13/12/2004 Written 1,800 7.9369 Short CFD 13/12/2004 Written 1,172 7.9453 Short CFD 14/12/2004 Entered into 6,838 8.1375 Long CFD 14/12/2004 Written 1,070 8.0410 Long CFD 14/12/2004 Written 300 8.0450 Short CFD 14/12/2004 Written 911 8.0850 Long CFD 15/12/2004 Written 450 8.1600 Short CFD 15/12/2004 Written 100 8.1550 Long CFD 16/12/2004 Written 1,271 8.3036 Short CFD 21/12/2004 Written 987 8.2720 Long CFD 24/12/2004 Written 744 8.5544 Long CFD 29/12/2004 Written 823 8.5600 Long CFD 29/12/2004 Written 500 8.5600 Short CFD 31/12/2004 Written 492 8.5050 Long CFD 05/01/2005 Written 1,726 8.5457 Long CFD 06/01/2005 Written 400 8.3950 Short CFD 06/01/2005 Written 1,137 8.3561 Long CFD 10/01/2005 Written 171 8.4350 Short CFD 12/01/2005 Written 634 8.4650 Short CFD 13/01/2005 Written 1,100 8.4505 Short CFD 13/01/2005 Written 1,230 8.4300 Short CFD 14/01/2005 Written 1,600 8.5444 Long CFD 17/01/2005 Written 1,045 8.4900 Long CFD 18/01/2005 Written 2,154 8.6102 Short CFD 19/01/2005 Written 63 8.6300 Short CFD 21/01/2005 Written 1,300 8.6265 Short CFD 25/01/2005 Written 100 8.6550 Long CFD 26/01/2005 Written 400 8.9950 Long CFD 27/01/2005 Written 107 8.9950 Short CFD 28/01/2005 Written 1,475 9.1013 Short CFD 31/01/2005 Written 599 9.1600 Short CFD 31/01/2005 Written 978 9.1600 Long CFD 01/02/2005 Written 15 9.3100 Long CFD 03/02/2005 Written 1,066 9.3619 Long CFD 03/02/2005 Written 1,401 9.3529 Long CFD 07/02/2005 Written 380 9.2929 Long CFD 07/02/2005 Written 220 9.2850 Short CFD 10/02/2005 Written 658 9.1850 Short CFD 10/02/2005 Written 800 9.0550 Short CFD 11/02/2005 Written 981 9.1500 Short CFD 11/02/2005 Written 948 9.1500 Long CFD 15/02/2005 Written 1,729 8.9950 Short CFD 15/02/2005 Written 1,882 8.8934 Short CFD 15/02/2005 Written 1,495 8.9350 Long CFD 16/02/2005 Written 1,784 8.9745 Long CFD 16/02/2005 Written 1,882 8.9600 Long CFD 21/02/2005 Written 1,615 8.9100 Long CFD 22/02/2005 Written 2,618 8.9524 Short CFD 22/02/2005 Written 200 8.9200 Short CFD 23/02/2005 Entered into 16,107 9.1200 Long CFD 23/02/2005 Written 1,319 8.9824 Long CFD 23/02/2005 Written 4,816 9.0295 Long CFD 24/02/2005 Written 1,100 9.3114 Short CFD 25/02/2005 Written 1,700 9.3018 Short CFD 25/02/2005 Written 1,132 9.3782 Short CFD 28/02/2005 Written 300 9.2450 Short CFD 28/02/2005 Written 400 9.2450 Short CFD 02/03/2005 Entered into 9,497 9.2557 Long CFD 02/03/2005 Written 1,419 9.2500 Long CFD 02/03/2005 Written 1,419 9.1950 Short CFD 03/03/2005 Entered into 3,387 9.2125 Long CFD 03/03/2005 Written 300 9.2450 Long CFD 03/03/2005 Written 1,350 9.2200 Short CFD 04/03/2005 Entered into 2,051 9.2484 Short CFD 04/03/2005 Written 2,206 9.2550 Short CFD 07/03/2005 Entered into 2,531 9.3025 Long CFD 07/03/2005 Written 987 9.2450 Long CFD 07/03/2005 Written 1,021 9.3239 Short CFD 07/03/2005 Written 800 9.2550 Short CFD 08/03/2005 Entered into 10,149 9.2408 Long CFD 08/03/2005 Written 1,000 9.3380 Short CFD 08/03/2005 Written 2,340 9.2640 Short CFD 08/03/2005 Written 100 9.2850 Short CFD 09/03/2005 Entered into 17,603 9.3456 Short CFD 11/03/2005 Written 1,438 9.4000 Long CFD 14/03/2005 Written 1,511 9.3863 Short CFD 16/03/2005 Entered into 16,048 9.2225 Long CFD 16/03/2005 Written 190 9.3600 Long CFD 16/03/2005 Written 1,200 9.1600 Long CFD 16/03/2005 Written 16,048 9.2225 Long CFD 18/03/2005 Written 900 8.9950 Short CFD 18/03/2005 Written 800 9.1050 Long CFD 22/03/2005 Written 2,186 9.0905 Long CFD 22/03/2005 Written 2,540 9.2159 Short CFD 22/03/2005 Written 1,000 9.0850 Long CFD 23/03/2005 Written 2,315 8.9841 Long CFD 23/03/2005 Written 385 8.9850 Short CFD 23/03/2005 Written 500 9.0850 Short CFD 24/03/2005 Written 2,300 9.0139 Long CFD 30/03/2005 Written 1,200 8.9300 Short CFD 31/03/2005 Written 3,222 8.9944 Short CFD 31/03/2005 Written 745 9.0300 Long CFD 01/04/2005 Written 700 9.0450 Long CFD 01/04/2005 Written 531 9.0856 Short CFD 05/04/2005 Written 500 8.9450 Short CFD 05/04/2005 Written 200 8.9450 Short CFD 06/04/2005 Written 933 8.9279 Short CFD 08/04/2005 Written 2,700 8.9000 Long CFD 11/04/2005 Written 708 8.8694 Long CFD 12/04/2005 Written 100 8.7550 Short CFD 12/04/2005 Written 1,400 8.7550 Long CFD 14/04/2005 Written 667 8.7950 Long CFD 15/04/2005 Written 932 8.7723 Short CFD 15/04/2005 Written 308 8.6150 Long CFD 18/04/2005 Written 1,495 8.5797 Short CFD 19/04/2005 Written 2,789 8.7021 Short CFD 22/04/2005 Entered into 14,269 8.6996 Long CFD 22/04/2005 Written 500 8.7250 Long CFD 22/04/2005 Written 14,269 8.6952 Long CFD 26/04/2005 Written 2,412 8.7246 Long CFD 27/04/2005 Written 1,600 8.6147 Long CFD 27/04/2005 Written 1,851 8.5565 Long CFD 28/04/2005 Written 700 8.4250 Short CFD 28/04/2005 Written 100 8.5550 Short CFD 28/04/2005 Written 2,329 8.2351 Long CFD 29/04/2005 Written 100 8.2500 Long CFD 03/05/2005 Written 270 8.3450 Long CFD 03/05/2005 Written 547 8.5850 Short CFD 03/05/2005 Written 500 8.4700 Short CFD 03/05/2005 Written 2,739 8.4750 Long CFD 04/05/2005 Written 3,471 8.4503 Long CFD 05/05/2005 Written 631 8.4350 Short CFD 05/05/2005 Written 300 8.3550 Short CFD 05/05/2005 Written 1,700 8.5000 Long CFD 06/05/2005 Written 320 8.4806 Short CFD 09/05/2005 Entered into 33,483 8.4200 Long CFD 09/05/2005 Written 1,177 8.4752 Short CFD 09/05/2005 Written 100 8.3550 Long CFD 10/05/2005 Written 1,519 8.4711 Long CFD 11/05/2005 Written 742 8.3546 Short CFD 11/05/2005 Written 537 8.3050 Short CFD 17/05/2005 Written 900 8.5200 Short CFD 18/05/2005 Written 100 8.4050 Short CFD 18/05/2005 Written 1,100 8.5000 Short CFD 19/05/2005 Written 4,142 8.5033 Short CFD 20/05/2005 Entered into 29,023 8.4000 Long CFD 20/05/2005 Written 29,023 8.4000 Long CFD 20/05/2005 Written 400 8.4713 Short CFD 20/05/2005 Written 2,954 8.3000 Short CFD 23/05/2005 Written 274 8.3600 Long CFD 24/05/2005 Written 2,759 8.7450 Short CFD 24/05/2005 Written 300 8.4450 Short CFD 26/05/2005 Written 600 8.7500 Long CFD 27/05/2005 Written 1,700 8.7350 Short CFD 01/06/2005 Written 500 8.8450 Long CFD 02/06/2005 Written 3,402 8.7754 Short CFD 02/06/2005 Written 900 8.7800 Short CFD 03/06/2005 Written 1,175 8.7627 Long CFD 06/06/2005 Written 1,600 8.7800 Long CFD 07/06/2005 Written 1,404 8.9273 Short CFD 10/06/2005 Written 5,339 8.7562 Short CFD 13/06/2005 Written 740 8.7957 Short CFD 14/06/2005 Written 495 8.8298 Short CFD 14/06/2005 Written 200 8.8000 Short CFD 15/06/2005 Written 200 8.9150 Long CFD 20/06/2005 Written 5,981 9.0522 Short CFD 22/06/2005 Written 3,826 9.0150 Short CFD 23/06/2005 Written 926 9.0050 Long CFD 24/06/2005 Written 3,329 9.0627 Long CFD 27/06/2005 Written 3,151 9.0198 Short CFD 28/06/2005 Written 200 9.0050 Long CFD 30/06/2005 Written 300 9.1450 Short CFD 01/07/2005 Written 4,400 9.1785 Short CFD 04/07/2005 Written 806 9.2050 Long CFD 05/07/2005 Written 1,500 8.9210 Short CFD 06/07/2005 Written 9,369 8.8562 Long CFD 07/07/2005 Written 2,100 9.0650 Short CFD 07/07/2005 Written 600 9.0200 Short CFD 08/07/2005 Written 3,600 9.1208 Short CFD 11/07/2005 Written 500 9.2650 Long CFD 12/07/2005 Written 4,222 9.3787 Long CFD 13/07/2005 Written 2,000 9.4550 Short CFD 13/07/2005 Written 1,798 9.4200 Short CFD 14/07/2005 Entered into 10,326 9.3107 Long CFD 14/07/2005 Written 5,774 9.3497 Short CFD 14/07/2005 Written 1,200 9.4050 Long CFD 15/07/2005 Written 1,900 9.3726 Long CFD 18/07/2005 Written 4,987 9.3612 Long CFD 19/07/2005 Written 3,368 9.3337 Short CFD 19/07/2005 Written 1,200 9.3250 Long CFD 20/07/2005 Written 2,948 9.4413 Short CFD 20/07/2005 Written 300 9.3250 Long CFD 21/07/2005 Written 828 9.5557 Short CFD 21/07/2005 Written 1,400 9.4950 Short CFD 22/07/2005 Entered into 2,564 9.5110 Short CFD 22/07/2005 Written 2,500 9.5450 Long CFD 25/07/2005 Written 1,500 9.5353 Long CFD 26/07/2005 Entered into 2,564 9.6163 Long CFD 27/07/2005 Written 2,246 9.7350 Long CFD 28/07/2005 Written 1,300 9.8700 Short CFD 28/07/2005 Written 200 9.6550 Short CFD 29/07/2005 Entered into 2,462 9.8433 Long CFD 29/07/2005 Written 4,900 9.8440 Long CFD 02/08/2005 Written 3,200 9.9500 Short CFD 03/08/2005 Written 900 9.7750 Short CFD 04/08/2005 Written 3,374 9.8630 Long CFD 05/08/2005 Written 100 9.8900 Long CFD 05/08/2005 Written 2,200 10.1050 Short CFD 08/08/2005 Written 1,894 10.4302 Short CFD 10/08/2005 Written 1,100 10.3032 Short CFD 11/08/2005 Written 2,467 10.3105 Short CFD 12/08/2005 Written 500 10.3100 Short CFD 15/08/2005 Entered into 4,037 10.2815 Short CFD 15/08/2005 Entered into 6,290 10.2815 Short CFD 15/08/2005 Written 4,200 10.2864 Short CFD 16/08/2005 Entered into 4,982 10.4272 Short CFD 16/08/2005 Entered into 7,750 10.4272 Short CFD 16/08/2005 Written 500 10.4350 Short CFD 18/08/2005 Entered into 3,616 10.3177 Short CFD 18/08/2005 Entered into 7,442 10.3177 Short CFD 18/08/2005 Written 1,100 10.3250 Short CFD 19/08/2005 Entered into 71 10.3300 Short CFD 19/08/2005 Entered into 274 10.3300 Short CFD 19/08/2005 Entered into 102 10.3300 Long CFD 19/08/2005 Written 274 10.3248 Short CFD 19/08/2005 Written 8,860 10.2466 Short CFD 22/08/2005 Entered into 5,191 10.0972 Short CFD 22/08/2005 Entered into 19,785 10.1061 Short CFD 22/08/2005 Entered into 7,332 10.0972 Long CFD 22/08/2005 Written 19,785 10.1010 Short CFD 22/08/2005 Written 3,100 10.1105 Short CFD 23/08/2005 Written 5,970 10.0895 Short CFD 23/08/2005 Written 133 10.1000 Short CFD 24/08/2005 Written 1 10.0400 Short CFD 24/08/2005 Written 2,117 10.0506 Short CFD 25/08/2005 Written 900 10.0400 Short CFD 26/08/2005 Written 1,400 10.1000 Short CFD 30/08/2005 Entered into 44,626 10.0975 Long CFD 30/08/2005 Written 44,626 10.0975 Short CFD 31/08/2005 Written 600 10.0450 Short CFD 01/09/2005 Written 3,988 10.0743 Short CFD 02/09/2005 Entered into 410 10.1200 Short CFD 02/09/2005 Written 52 10.0550 Short CFD 06/09/2005 Entered into 489 12.2600 Short CFD 06/09/2005 Entered into 1,869 12.2600 Short CFD 06/09/2005 Entered into 2,187 12.2600 Long CFD 06/09/2005 Written 1,914 11.9610 Long CFD 06/09/2005 Written 1,869 12.2539 Short CFD 06/09/2005 Written 2,282 11.6002 Long CFD 07/09/2005 Written 300 12.1200 Short CFD 07/09/2005 Written 6,716 12.1327 Long CFD 08/09/2005 Written 500 12.1500 Short CFD 08/09/2005 Written 2,735 12.1975 Long CFD 09/09/2005 Written 300 12.1800 Short CFD 09/09/2005 Written 2,209 12.2420 Long CFD 12/09/2005 Written 2,793 12.1660 Short CFD 12/09/2005 Written 7,969 12.1739 Long CFD 13/09/2005 Written 300 12.2400 Short CFD 13/09/2005 Written 516 12.1600 Short CFD 14/09/2005 Written 6,617 12.2196 Long CFD 15/09/2005 Written 200 12.2200 Short CFD 15/09/2005 Written 687 12.2100 Short CFD 16/09/2005 Written 4,305 12.1958 Short CFD 20/09/2005 Written 3,600 12.2167 Long CFD 21/09/2005 Written 2,300 12.1665 Short CFD 21/09/2005 Written 800 12.2600 Long CFD 21/09/2005 Written 2,300 12.1665 Short CFD 21/09/2005 Written 800 12.2600 Short CFD 22/09/2005 Written 300 11.9200 Short CFD 23/09/2005 Written 4,549 11.7283 Short CFD 26/09/2005 Written 10,434 11.6694 Short CFD 27/09/2005 Written 1,300 11.7261 Short CFD 28/09/2005 Written 14,317 11.1911 Short CFD 29/09/2005 Written 5,429 11.0995 Short CFD 29/09/2005 Written 271 11.1100 Short CFD 30/09/2005 Written 13,818 11.1317 Long CFD 05/10/2005 Written 2,608 11.1596 Long CFD 06/10/2005 Written 3,200 10.9512