Yet more additions to the Uncut-sponsored Latitude Festival, today (April 25). Brighton-based ornithologists British Sea Power have been confirmed for the main stage on Friday night, while Toronto electropunks Crystal Castles (cover stars for our chums at NME this week, incidentally) will play the delightful Sunrise Arena in the woods.

Blondie and Foals were announced yesterday, along with Nick Cave‘s Grinderman project, Seasick Steve, and The Go! Team all confirmed to play the Obelisk Arena from July 17.

They join headliners Franz Ferdinand, Sigur Ros and Interpol, along with Elbow, The Breeders and Death Cab For Cutie on Latitude’s main stage.

Over at the Uncut Arena, meanwhile, we’re pleased to say that the headliners will be the ecstatic Malian duo Amadou & Mariam, fearsomely intense prog-punks The Mars Volta and, closing the festival, Tindersticks.

Latitude takes place at Henham Park, Southwold, Sufflolk between July 17 and 20.

Tickets are selling fast, and are available from the credit card hotline – 0871 231 0821. Or online at www.seetickets.com, www.festivalrepublic.com.

Keep your browsers pointed at www.uncut.co.uk – we’ll announce new additions there the minute we hear of them.