Plan B, Katy B, Eliza Doolittle, Devlin for free London show

Acts set to play Camden's Proud Galleries on March 31

Plan B, Katy B, Eliza Doolittle and Devlin are set to play a free show in London later this month.

The acts will play full live shows at the Proud Galleries venue in Camden on March 31.

The show is being organised by Sony to tie in with their Music Unlimited online music service. Fans can enter to win free tickets at

The show kicks off at 7:30pm (GMT). A limited number of tickets will be kept back for the door to be given out on a first-come, first-served basis.