RNS Number:9180T
Marconi Corporation PLC
06 January 2004

Marconi received the following notification today:





                            Appaloosa Management LP

                                 26 Main Street

                                Chatham NK 07928





5 January, 2004





The Directors

Marconi Corporation plc

c/o Mary Skelley

Regent's Place

338 Euston Road

London NW1 3BT



Dear Sirs,



Marconi Corporation PLC (The "Company")



We hereby give you notice pursuant to Part VI of the Companies Act 1985 that
Appaloosa Investment Limited Partnership I of 26 Main Street, Chatham, New
Jersey 07928, USA no longer has a notifiable interest in the ordinary share
capital of the Company.



Please acknowledge receipt of this letter by return to our English counsel,
Bingham McCutchen LLP, marked for the attention of Vance Chapman.





Yours faithfully





For an on behalf of

Appaloosa Investment Limited Partnership I












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