The open-air concerts will take place between Thursday 11
22-year old Odell was awarded the Critics Choice Award at this years BRITs - making him the first male winner of the award. Odell performed at Burberry's AW13 show a few days before the BRITs. Speaking about his headline spot, he said: "I've always been a big fan of Summer Series at Somerset House, so it's an absolute honour to be part of it this summer".
Other confirmed acts so far include Alex Clare, Band Of Horses, First Aid Kit, Edward Sharp & The Magnetic Zeroes, Of Monsters and Men, and Richard Hawley.
Alex Clare will kick off the festivities on the 11th July. Festival big-hitters Goldfrapp - back with a new album - and Basement Jaxx will be performing on the final weekend of the festival.
Last years line-up included Katy B, Charlotte Gainsbourg and Paloma Faith.
Tickets go on general sale at 9am on Friday 15