Church of England ministers have opposed what they call the “pragmatic” approach taken by some authorities to sex and sport, which ignores the sometimes prevalent link with human trafficking.

The emergence of the “mega-brothel”, facilitated by some German cities during the 2006 football World Cup to meet the demands of the estimated three million fans at the tournament, horrified the dioceses of Winchester and Newcastle.

Signs of the same thing happening at the South Africa football World Cup in 2010 prompted the dioceses to table a motion at next month’s General Synod calling on the British government to prevent such a thing happening at the London Olympics 2012.

Tens of thousands of extra prostitutes were bussed into Germany, many of whom were likely to have been trafficked, the ministers said.

Studies suggested that prostitution levels may have in fact decreased during the World Cup.