UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 6-K
REPORT OF FOREIGN PRIVATE ISSUER
PURSUANT TO RULE 13a-16 OR 15d-16
UNDER THE SECURITIES EXCHANGE ACT OF 1934
For the month of January, 2005
SPIRENT plc
_____________________________________________________________________
(Translation of registrant's name into English)
Spirent House, Crawley Business Quarter, Fleming Way, Crawley, West Sussex
RH10 9QL, UK.
_____________________________________________________________________
(Address of principal executive offices)
Indicate by check mark whether the registrant files or will file annual reports
under cover Form 20-F or Form 40-F.
Form 20-F X Form 40-F.....
Indicate by check mark whether the registrant by furnishing the information
contained in this Form is also thereby furnishing the information to the
Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934.
Yes ..... No X
If "Yes" is marked, indicate below the file number assigned to the registrant
in connection with Rule 12g3-2(b): 82- ________
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 4239749 645,114
BANK OF NEW YORK 214075 4,908,886
BANK OF NEW YORK 221428 698,350
BANK OF NEW YORK 367748 2,386,871
BANK OF NEW YORK 392067 2,887,580
BANK OF NEW YORK 392177 405,953
BANK OF NEW YORK 768198 216,933
BARCLAYS CAPITAL NOMINEES LIMI 990,842
BNP PARIBAS 57,625
BNY (OCS) NOMINEES LTD 221476 205,774
BNY (OCS) NOMINEES LTD 387173 33,657
BOISS NOMINEES LTD 4224361 406,490
CHASE NOMINEES LTD 16376 562,967
CHASE NOMINEES LTD 16669 134,728
CHASE NOMINEES LTD 18243 123,823
CHASE NOMINEES LTD 19518 306,837
CHASE NOMINEES LTD 19519 2,646,373
CHASE NOMINEES LTD 20947 34,412,591
CHASE NOMINEES LTD 21359 1,483,196
CHASE NOMINEES LTD 25772 696,431
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 999,243
CHASE NOMINEES LTD 31961 2,061,118
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 713,817
HSBC 814537 80,198
HSBC 845315 23,453
INVESTORS BANK AND TRUST CO 29,665
INVESTORS BANK AND TRUST CO 3,103,713
INVESTORS BANK AND TRUST CO 508,306
INVESTORS BANK AND TRUST CO 1,017,482
INVESTORS BANK AND TRUST CO 661,501
INVESTORS BANK AND TRUST CO 14,730
INVESTORS BANK AND TRUST CO 124,416
JP MORGAN (BGI CUSTODY) 16331 351,468
JP MORGAN (BGI CUSTODY) 16341 1,768,141
JP MORGAN (BGI CUSTODY) 16341 593,372
JP MORGAN (BGI CUSTODY) 16344 567,650
JP MORGAN (BGI CUSTODY) 16345 977,469
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) 27795 228,835
JP MORGAN (BGI CUSTODY) 27799 1,070,521
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 205,189
MELLON BANK ABGFZ872482 516,582
MELLON BANK TGGF0003002 101,154
MELLON TRUST - BOSTON & SF 163,524
MELLON TRUST OF NEW ENGLAND 204,115
MIDLAND BANK (HSBC BANK PLC) 772823 2,682,742
NORTHERN TRUST BCP04 67,019
NORTHERN TRUST CVS21 1,012,315
NORTHERN TRUST SCO06 303,975
NORTHERN TRUST TNF01 481,183
NORTHERN TRUST USF06 193,023
NORTHERN TRUST USF12 1,321,652
NORTHERN TRUST BANK - BGI SEPA 189,697
NORTHERN TRUST BANK - BGI SEPA 265,504
NORTHERN TRUST BANK - BGI SEPA 53,646
R C GREIG NOMINEES LIMITED A/C BL1 132,653
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 97,113,892
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 19 JANUARY 2005
11. Date company informed
21 JANUARY 2005
12. Total holding following this notification
97,113,892
13. Total percentage holding of issued class following this notification
10.13%
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 10.13%. SHAREHOLDER PREVIOUSLY REPORTED A SHAREHOLDING OF
49,197,453 SHARES (5.15%) ON 25 NOVEMBER 2004.
15. Name of contact and telephone number for queries
MICHAEL ANSCOMBE - 01293 767672
16. Name and signature of authorised company official responsible for making
this notification
MICHAEL ANSCOMBE - ASSISTANT COMPANY SECRETARY
Date of notification
21 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.
Signatures
Pursuant to the requirements of the Securities Exchange Act of 1934, the
registrant has duly caused this report to be signed on its behalf by the
undersigned, thereunto duly authorized.
______LUKE THOMAS______
(Registrant)
Date 21 January, 2005 By ____/s/ Luke Thomas____
(Signature)*