India is the surrogacy capital of the world thanks to legal loopholes, relatively low costs (Wikipedia suggests that the total is just 1/3rd the expense this procedure would cost in England) and lack of proper guidelines. According to the Sunday Telegraph there are thousands of unregulated clinic and Brits reportedly pay an average of 25,000 pounds for each procedure.
It is estimated that 2,000 births to surrogate mothers took place in the country last year, with most experts agreeing that Britain is the biggest single source of people who want to become parents in this way, the report said. Britain may account for as many as 1,000 births last year in India. In contrast there were 100 surrogate births recorded in Britain last year, it added.