Former defence secretary Michael Portillo yesterday ruled himself out of the race to become the next chairman of defence contractor BAE Systems.

He dismissed as ''entirely wrong'' a report in the Sunday Telegraph that he was seeking to replace Sir Richard Evans as chairman of the FTSE-100 company.

The newspaper said Portillo had approached the board in the past two weeks to indicate his desire to replace Sir Richard, who will retire in May.

Portillo said: ''The report in today's Sunday Telegraph that I am seeking the chairmanship of BAE Systems is entirely wrong. I am not.

''Indeed I am a member of the nominations committee that is conducting the search for the new chairman.'' BAE Systems designs and manufactures civil and military aircraft, surface ships, submarines and a range of defence products including guided weapons systems.

Portillo, who will stand down as MP for Kensington and Chelsea at the next election, has been building a career as a business adviser and television presenter. He is the second former government minister from the Conservative party to be linked with the chairmanships of high-profile companies in the past month.

London mayoral candidate Steven Norris was unveiled as the new interim chairman of Jarvis - at the centre of the inquiry into the Potters Bar rail crash - following the resignation of Paris Moayedi on November 25.