 BBC News | 'Mamma Mia!' set to become UK box office's highest grossing film Entertainment and Showbiz! - Abba-themed musical 'Mamma Mia!' is all set to become the highest grossing film of all time at the British box office. The film, set on an idyllic Greek Island, has so far taken 66.2 million pounds in the UK since its release on July 18. Mamma Mia! breaks records in UK Money, money, money? No thanks, say Mamma Mia! trio |