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 November, 2002 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- ________ London Stock Exchange NOTIFICATION OF INTERESTS OF DIRECTORS AND CONNECTED PERSONS All relevant boxes should be completed in typed block capital letters. 1 Name of company SPIRENT plc 2 Name of director Mr Goran Ennerfelt 3 Please state whether notification indicates that it is in respect of holding of the director named in 2 above or holding of that person's spouse or children under the age of 18 or in respect of a non-beneficial interest Beneficial interest via Lexa B.V. - see box 23 4 Name of the registered holder(s) and, if more than one holder, the number of shares held by each of them. (If notified) Lexa B.V. 5 Please state whether notification relates to a person(s) connected with the director named in 2 above and identify the connected person(s) Lexa B.V. 6 Please state the nature of the transaction. For PEP transactions please indicate whether general/single co PEP and if discretionary/non discretionary. Acquisition of shares 7 Number of shares/amount of stock acquired 10,000,000 8 Percentage of issued Class 1.06% 9 Number of shares/amount of stock disposed - 10 Percentage of Issued Class - 11 Class of security Ordinary shares of 3 1/3p each 12 Price per share (1) 2,500,000 at 17.4126 pence (2) 2,850,000 at 17.983 pence (3) 4,650,000 at 18 pence 13 Date of transaction (1) 19 November 2002 (2) 20 November 2002 (3) 22 November 2002 14 Date company informed 25 November 2002 15 Total holding following this notification 128,398,257 16 Total percentage holding of issued class following this notification 13.67% If a director has been granted options by the company please complete the following boxes. 17 Date of grant - 18 Period during which or date on which exercisable - 19 Total amount paid (if any) for grant of the option - 20 Description of shares or debentures involved: class, Number - 21 Exercise price (if fixed at time of grant) or indication that price is to be fixed at time of exercise - 22 Total number of shares or debentures over which options held following this notification - 23 Any additional information In addition to being a director of Spirent plc, Mr Ennerfelt is also President and Chief Executive of Axel Johnson A.B.. Mr Ennerfelt has the above connected beneficial interest through the shareholding of Lexa B.V., which is an Axel Johnson group company. The above acquisition of shares is therefore not a direct dealing by Mr Ennerfelt. 24 Name of contact and telephone number for queries Luke Thomas - 01293 767658 25 Name and signature of authorised company official responsible for making this notification Luke Thomas - Deputy Company Secretary Date of notification 25 November 2002 London Stock Exchange, Company Announcements Office, Old Broad Street, London EC2N 1HP Facsimile: 020 7588 6057, 020 7334 8964/8965/8966 (PLEASE DO NOT POST) Enquiries: Continuing obligations: Telephone: 020 7797 3850/1639/1972/3150 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: 25 November 2002 By ____/s/ Luke Thomas____ (Signature)*