Martha Wainwright, Julian Cope and Howling Bells have all joined the line-up for Latitude.

Sam Isaac, White Lies and Fields are also playing the festival, which takes place in Southwold, Suffolk between July 17 and 20.

The event is being headlined by Sigur Ros[/a], Franz Ferdinand and Interpol.

The line-up so far includes:[b]

Amadou And Mariam
Blondie
Breeders
British Sea Power
Death Cab For Cutie
Elbow
Fields
Foals
Franz Ferdinand
Grinderman
Howling Bells
Interpol
Julian Cope
Martha Wainwright
MIA
Nic Dawson Kelly
Sam Isaac
Seastick Steve
Sigur Ros
Tallulah Rendall
The Go! Team
The Mars Volta
Tindersticks
White Lies

There is also a full comedy, theatre and poetry line-up. See Latitudefestival.co.uk

To check the availability of Latitude tickets and get all the latest listings, go to NME.COM/GIGS now, or call 0871 230 1094.

Martha Wainwright tickets:

• May 19, 2008 at Royal Festival Hall, London - Check availability
• May 23, 2008 at Royal Concert Hall, Glasgow - Check availability
• May 24, 2008 at Symphony Hall, Birmingham - Check availability

More Martha Wainwright tickets