BRIDGE the World Travel Centre (071-911 0900) is offering what it claims to be the ultimate round-the-world itinerary 'for those wishing to see as much of the world for the least expense'. The pounds 1,299 fare offers this itinerary: London to St Petersburg flight, train to Moscow, Trans-Siberian Express to Peking, overland to Kunming, flight to Bangkok, overland to Singapore, flights to Jakarta, Bali, Sydney, Auckland, Fiji, Tahiti, Los Angeles, overland to Boston or New York, and return to London.