A bizarre altercation took place at the Museum of Transport in Covent Garden last week. The launch of the rather good exhibition on London transport was taking place. Guests thronged round the old buses and trams before going upstairs to se the 'rewind' and 'fast forward' sections of the show, organised by Wordsearch, when who should turn up but Ken Livingstone, ex-glc chief and inspiration for the 'Fares fair' policy of yesteryear. Just the person to look in, you might have thought. Alas, he was accompanied by a television crew attempting to carry out an interview with him. This meant the venue was being used for 'political purposes', and Ken was escorted out, under protest ('I've done more for Londoners and transport than anyone here this evening'). He complained that his rival for the Labour candidacy for the Mayor of London, Trevor Phillips, had been interviewed on Underground stations. Apparently the wily Trevor took the precaution of buying tickets for himself and the TV crew - evading expulsion.