Holding(s) in Company

Spirent PLC 27 January 2005 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 BANK OF IRELAND 4239730 289,266 BANK OF IRELAND 4239749 645,114 BANK OF NEW YORK 214075 5,207,031 BANK OF NEW YORK 221428 742,541 BANK OF NEW YORK 367748 2,653,825 BANK OF NEW YORK 392067 3,094,403 BANK OF NEW YORK 392177 405,953 BANK OF NEW YORK 768198 216,933 BARCLAYS CAPITAL NOMINEES LIMI 986,870 BNP PARIBAS 57,625 BNY (OCS) NOMINEES LTD 221476 205,774 BNY (OCS) NOMINEES LTD 387173 71,285 BOISS NOMINEES LTD 4224361 398,025 CHASE NOMINEES LTD 16376 527,631 CHASE NOMINEES LTD 16669 134,728 CHASE NOMINEES LTD 18243 123,823 CHASE NOMINEES LTD 19518 306,837 CHASE NOMINEES LTD 19519 2,287,823 CHASE NOMINEES LTD 20947 37,657,633 CHASE NOMINEES LTD 21359 1,483,196 CHASE NOMINEES LTD 25772 740,598 CHASE NOMINEES LTD 27793 82,603 CHASE NOMINEES LTD 27795 102,621 CHASE NOMINEES LTD 27797 138,568 CHASE NOMINEES LTD 27799 299,495 CHASE NOMINEES LTD 27800 1,037,801 CHASE NOMINEES LTD 27802 26,754 CHASE NOMINEES LTD 27804 26,545 CHASE NOMINEES LTD 28270 365,798 CHASE NOMINEES LTD 28270 1,054,929 CHASE NOMINEES LTD 31961 2,125,084 CIBC MELLON GLOBAL SECURITIES 47,233 CITIBANK 6010613363 86,613 CITIBANK 6010640794 253,843 CITIBANK 6010782807 433,211 DEUTSCHE BANK LONDON 8003168 30,331 HSBC 813168 796,049 HSBC 814537 80,198 HSBC 845315 23,453 INVESTORS BANK AND TRUST CO 915,354 INVESTORS BANK AND TRUST CO 619,882 INVESTORS BANK AND TRUST CO 14,730 INVESTORS BANK AND TRUST CO 47,333 INVESTORS BANK AND TRUST CO 4,894,733 INVESTORS BANK AND TRUST CO 1,620,581 INVESTORS BANK AND TRUST CO 126,144 JP MORGAN (BGI CUSTODY) 16331 351,468 JP MORGAN (BGI CUSTODY) 16341 593,372 JP MORGAN (BGI CUSTODY) 16341 1,841,753 JP MORGAN (BGI CUSTODY) 16344 605,254 JP MORGAN (BGI CUSTODY) 16345 1,032,894 JP MORGAN (BGI CUSTODY) 16400 10,298,369 JP MORGAN (BGI CUSTODY) 16612 289,986 JP MORGAN (BGI CUSTODY) 16621 241,168 JP MORGAN (BGI CUSTODY) 16644 297,267 JP MORGAN (BGI CUSTODY) 16901 149,752 JP MORGAN (BGI CUSTODY) 18409 484,895 JP MORGAN (BGI CUSTODY) 19514 82,721 JP MORGAN (BGI CUSTODY) 20946 35,336 JP MORGAN (BGI CUSTODY) 27795 228,835 JP MORGAN (BGI CUSTODY) 27799 1,124,484 JP MORGAN (BGI CUSTODY) 28166 3,027,976 JP MORGAN CHASE BANK 340,332 JP MORGAN CHASE BANK 190,590 JP MORGAN CHASE BANK 409,555 JP MORGAN CHASE BANK 633,980 JP MORGAN CHASE BANK 347,670 MELLON BANK ABGFZ872482 827,679 MELLON BANK TGGF0003002 101,154 MELLON TRUST - BOSTON & SF 256,673 MELLON TRUST OF NEW ENGLAND 320,175 MIDLAND BANK (HSBC BANK PLC) 772823 2,860,115 NORTHERN TRUST BCP04 67,019 NORTHERN TRUST CVS21 1,120,589 NORTHERN TRUST SCO06 303,975 NORTHERN TRUST TNF01 481,183 NORTHERN TRUST USF06 193,023 NORTHERN TRUST USF12 1,509,895 NORTHERN TRUST BANK - BGI SEPA 421,924 NORTHERN TRUST BANK - BGI SEPA 300,968 NORTHERN TRUST BANK - BGI SEPA 85,456 R C GREIG NOMINEES LIMITED A/C BL1 127,653 R C GREIG NOMINEES LIMITED A/C CM1 34,397 R C GREIG NOMINEES LIMITED GP1 GP1 30,098 R C GREIG NOMINEES LIMITED SA1 SA1 20,902 STATE STREET 2RJ2 127,458 STATE STREET JD12 447,165 STATE STREET N3B6 42,101 STATE STREET N3YZ 10,972 ZEBAN NOMINEES LIMITED 21,700 ZEBAN NOMINEES LIMITED 1,000 TOTAL 105,807,731 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 26 JANUARY 2005 11. Date company informed 27 JANUARY 2005 12. Total holding following this notification 105,807,731 13. Total percentage holding of issued class following this notification 11.03% 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 11.03%. SHAREHOLDER PREVIOUSLY REPORTED A SHAREHOLDING OF 97,113,892 SHARES (10.13%) ON 21 JANUARY 2005. 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 27 JANUARY 2005 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
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