Earlier this year, festival organiser ATP announced the end of its spring shows at Butlins – sad news for people who like their cult bands to come with waterslides and chalets. I'll Be Your Mirror – ATP's latest venture – doesn't quite cut it as a summer replacement; swan-shaped pedalo rides on Ally Pally's boating lake are a poor substitute for Butlins' Master Blaster Rafts, and the scattering of art installations around the main building feels like an afterthought. But the bill, chosen by Portishead, is as strong as ever, catering particularly to fans of mid-90s gloom but teeming with the kind of variety and esoterica that distinguish ATP festivals.
Foot Village are four LA hipsters who batter the bejesus out of their drums and scream into a loud-hailer – best in small doses, probably, but invigorating nonetheless. Saturday's real draw is one of only a couple of PJ Harvey UK festival gigs this summer and it is extraordinary, pulsing with the richness and drama of her Gallipoli-inspired new album, the rush of battle and the bitterness of its aftermath. Portishead aren't quite upstaged at their own party; layering songs – once misconstrued as chill-out – with guitar squalls and industrial noise and doing full justice to their anguished back catalogue.
Sunday is sunny, meaning an unforeseen line-up clash between a pleasant doze in the rose garden and a performance of a new score to the harrowing silent film Joan of Arc. The smart choice is a bit of both. On the mainstage, the wistful pop of Baltimore's Beach House is hungover Sunday afternoon fare. No concessions to hangovers from Grinderman though, who bring the sound of an extra-marital affair gone horribly wrong. "I just want to relax" shrieks a grinding, thrusting Nick Cave over thumping garage rock. Swan-shaped pedalos are that way, mate.
Best performance PJ Harvey
Best discovery Foot Village
Overheard During a short film of fuzzy street footage and distorted sound: "Bit mainstream for my tastes."
