Diamond Cable Communications 10-Q 2002 Q3 Quarterly report

EX-99.1: CERTIFICATION OF CEO & CFO

Exhibit 99.1

CERTIFICATION OF CEO AND CFO PURSUANT TO
18 U.S.C. SECTION 1350,
AS ADOPTED PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

         In connection with the Quarterly Report on Form 10-Q of Diamond Cable Communications Limited (the “Company”) for the quarter ended September 30, 2002 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), Barclay Knapp, as Director of the Company, and John F. Gregg, as Director of the Company, each hereby certifies, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, to the best of his knowledge, that:

(1)  The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2)  The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company as of, and for, the periods presented in the Report.

/s/ J. Barclay Knapp
Name: Barclay Knapp
Title: Director*
Date: November 13, 2002

/s/ John F. Gregg
Name: John F. Gregg
Title: Director*
Date: November 13, 2002

         This certification accompanies the Report pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 and shall not, except to the extent required by the Sarbanes-Oxley Act of 2002, be deemed filed by the Company for purposes of Section 18 of the Securities Exchange Act of 1934, as amended.

*The Company has no Chief Executive Officer or Chief Financial Officer. Barclay Knapp and John F. Gregg are Directors of the Company and are Chief Executive Officer and Chief Financial Officer, respectively, of NTL Incorporated, the indirect parent of the Company.