Influential Manchester group the Stone Roses have announced they are reforming after 15 years apart for a series of gigs in 2012.

The band will play two shows at Heaton Park, Manchester, on 29 and 30 June before an "extensive" world tour.

Speaking at a London press conference, singer Ian Brown said, "If we didn't think we had it in us we wouldn't be sat here wasting our own time, never mind anyone else's."