Indian visitor numbers rose from 205,000 to 367,000 in 2006 and are expected to increase at a greater rate. The average spend by an Indian tourist is 793 pounds, compared with 710 pounds by an American tourist.

Last year, VisitBritain, a government agency, issued a tourist map of sites featured in Bollywood films to coincide with the International Indian Film Academy Awards ceremony which was held in Yorkshire.

According to travel agent Cox & Kings, nearly half of all Indian visitors to Britain now came from smaller cities such as Pune, Ahmedabad, Indore, Jalandhar, Hissar, Nagpur, Coimbatore and Madurai.

There has been a three-fold increase in the number of Indian tourists holidaying in Britain over the past decade, says VisitBritain. India, it adds, has become the most important development market.

Elliott Frisby, a spokesman for VisitBritain, said that the number of Indian visitors had grown by about 170 per cent between 1993 and 2007. In ten years' time, if the growth rates stay the same, this could be one of our biggest markets.