ABBA movie-musical Mamma Mia! has become the UK’s biggest-selling DVD ever.

One in four UK households now own the film, which is the first DVD to sell over five million units.

The movie’s sales put it ahead of Pirates of the Caribbean: The Curse of the Black Pearl, which previously was the best seller with £4.7 million copies sold.

The third and fourth best-selling DVDs are both part of the Lord of the Rings trilogy (Fellowship of the Ring at three and the Two Towers at four).

Bond movie Casino Royale completes the top five.