LONDON, Nov. 25, 2004 (PRIMEZONE) --
SCHEDULE 10 NOTIFICATION OF MAJOR INTERESTS IN SHARES 1. Name of company SPIRENT PLC 2. Name of shareholder having a major interest BARCLAYS PLC 3. Please state whether notification indicates that it is in respect of holding of the shareholder named in 2 above or in respect of a non-beneficial interest or in the case of an individual holder if it is a holding of that person's spouse or children under the age of 18 SHAREHOLDER NAMED IN 2 ABOVE 4. Name of the registered holder(s) and, if more than one holder, the number of shares held by each of them Registered Holder Account designation Holding BARCLAYS CAPITAL NOMINEES LIMI 804,872 CHASE NOMINEES LTD 16376 562,967 CHASE NOMINEES LTD 20947 29,821,307 CHASE NOMINEES LTD 21359 1,267,026 INVESTORS BANK AND TRUST CO 116,208 INVESTORS BANK AND TRUST CO 298,290 INVESTORS BANK AND TRUST CO 369,757 INVESTORS BANK AND TRUST CO 12,766 JP MORGAN (BGI CUSTODY) 16331 351,468 JP MORGAN (BGI CUSTODY) 16341 1,453,016 JP MORGAN (BGI CUSTODY) 16341 550,836 JP MORGAN (BGI CUSTODY) 16344 473,746 JP MORGAN (BGI CUSTODY) 16345 820,410 JP MORGAN (BGI CUSTODY) 16400 9,999,746 JP MORGAN (BGI CUSTODY) 18409 484,895 JP MORGAN CHASE BANK 633,980 JP MORGAN CHASE BANK 360,275 JP MORGAN CHASE BANK 409,555 JP MORGAN CHASE BANK 179,290 R C GREIG NOMINEES LIMITED A/C BL1 134,745 R C GREIG NOMINEES LIMITED A/C CM1 35,079 R C GREIG NOMINEES LIMITED GP1 GP1 34,067 R C GREIG NOMINEES LIMITED SA1 SA1 22,152 ZEBAN NOMINEES LIMITED 1,000 TOTAL 49,197,453 5. Number of shares / amount of stock acquired NOT NOTIFIED 6. Percentage of issued class NOT NOTIFIED 7. Number of shares / amount of stock disposed - 8. Percentage of issued class - 9. Class of security ORDINARY SHARES OF 3.3333 PENCE EACH 10.Date of transaction HOLDING AS AT 23 NOVEMBER 2004 11.Date company informed 25 NOVEMBER 2004 12.Total holding following this notification 49,197,453 13.Total percentage holding of issued class following this notification 5.15% 14.Any additional information NOTIFICATION RECEIVED PURSUANT TO S198-202 COMPANIES ACT 1985 THAT THE SHAREHOLDER NAMED IN 2 ABOVE HAS INCREASED THEIR NOTIFIABLE SHAREHOLDING IN SPIRENT PLC TO 5.15%. SHAREHOLDER PREVIOUSLY REPORTED A SHAREHOLDING OF 47,205,061 SHARES (4.94%) ON 01 NOVEMBER 2004. 15.Name of contact and telephone number for queries LUKE THOMAS - 01293 767658 16.Name and signature of authorised company official responsible for making this notification LUKE THOMAS - DEPUTY COMPANY SECRETARY Date of notification 25 NOVEMBER 2004 The FSA does not give any express or implied warranty as to the accuracy of this document or material and does not accept any liability for error or omission. The FSA is not liable for any damages (including, without limitation, damages for loss of business or loss of profits) arising in contract, tort or otherwise from the use of or inability to use this document, or any material contained in it, or from any action or decision taken as a result of using this document or any such material. This information is provided by RNS The company news service from the London Stock Exchange