She’d been rumoured to be playing the June 27-29 event but wasn’t among the names leaked to the press at the end of April, days before Eavis planned to announce the lineup.

“Everybody knows about her legal problems. It was better to get that cleared up first,” said Ray Cosbert, who looks after Winehouse for the small but growing management wing of London promoter Metropolis Music. He told Pollstar the deal to play the festival was made “some time ago.”

At the end of April, just before the papers published the Glastonbury bill and their reactions to it, Winehouse received a caution for common assault after she admitted to slapping a man who claimed he was trying to help her hail a cab.

Also hanging over her was the police investigation into the video, which was handed to them after The Sun ran a photo on the front page and claimed it showed Winehouse inhaling fumes from a small pipe. The images were said to have been filmed during a party at her house.

It wasn’t until May 14 that the police confirmed no further action would be taken.

Eavis has been quoted telling BBC News that he’s confident the troubled singer is sorting herself out and has no worries about her not showing at his event.