Where and when: Pyramid stage, 7pm Friday.

Dress code: Cautiously half-stripped waterproofs.

What happened: After a brief but torrential electrical storm led to the power on the Pyramid stage being shut down and the crowd running for cover, Lily Allen finally took to the stage, apologising in advance for a shortened set, which kicked off with LDN – "Sun is in the sky, oh why oh why, would I want to be anywhere else?" suddenly seemed optimistic. The weather held for a riotous set that served as a straightforward reminder of how brilliant a pop star Allen is; after all, who else would ask, "Is my camel toe really prevalent?" between songs? The older tracks stole the show – Smile, The Fear and Everyone's At It went down a treat – but Hard Out Here held up nicely, and what could have been a trite rolling out of Somewhere Only We Know seemed to unite the weather-beaten crowd in neighbour-hugging emotion. It seemed apt to end the too-brief set by signing off with Not Fair, her ode to premature ejaculation, but this was a lesson in putting on a proper pop show, given by a proper pop star.

High point: The mass singalong to Fuck You, dedicated to "Sepp fucking Blatter, you cunt", complete with a dancing two-fingered salute on the video screens.

Low point: Continuing the football theme, the World Cup track Bass Like Home sounded more speculative M&S advert pitch than rave anthem.

In a tweet: Least likely to get an uncensored broadcast on the BBC.