"When I got a call from Lex to invite me in the back door he said he didn't think it was my cup of tea - which was a strange comment, " added Jefferies.
The main plot consists of fifteen episodes that follow Batman and Robin, and eventually Superman, as they try to stop a nefarious scheme of Lex Luthor and the Joker.
The forum, which is led by Sir Trevor Chinn, chairman of Lex, a car-selling and leasing firm, was set up to counter the claims of the road lobby that it is ignored in Whitehall.