INDIE band Mystery Jets have been announced as the final main stage headliner for this year's Chagstock Festival.

Comprising father-and-son combo Henry and Blaine Harrison, alongside William Rees and Kapil Traveldi, Mystery Jets were formed on Eel Pie Island when the boys were still at school.

Seven years and four albums later, Mystery Jets headline Chagstock shortly after supporting Mumford and Sons on their mammoth USA arena tour.

They join a raft of new additions to the festival setlist, including Dizraeli and the Small Gods, Emily Barker and the Red Clay Halo, Crowns, Yes Sir Boss, Crazy Arm and Matthew and Me.

Hailing from Western Australia, Emily Barker is a compelling songwriter with a gift for weaving melody and words, complemented by her three-piece ensemble, The Red Clay Halo. Emily is renowned for writing and recording the theme to BBC 1's Wallander.

Dizraeli and the Small Gods are a seven-piece English band playing an unusual blend of hip-hop and folk music who have played major festivals, including Glastonbury.

Cornish sea-shanty punks Crowns will include Chagstock in a busy year of festival appearances, as they also prepare for sets at Glastonbury, Download and Hard Rock Calling.

These acts join a strong line-up, including recently reformed Irish legends The Boomtown Rats, Billy Bragg, Kathryn Roberts and Sean Lakeman, Willie and the Bandits, Ferocious Dog and many more.

Ticket prices have been kept the same as in 2012 in recognition of the tough economic situation many people find themselves facing. The capacity has been capped to 5,000 to ensure a family-friendly atmosphere.

Weekend camping tickets cost £65 for adults, and £40 for 12 to 18 year olds.

Under 12s enter for free, although a ticket for entry will be required. A family ticket for two adults and two under 18s is £170. Camper vans, caravans and live-in vehicles can be brought on-site for £10 each.

All weekend tickets include two nights of camping, access to all music and on-site events, and car parking. Day tickets are also available. Booking fees apply.

For more information and tickets visit http://www.chagstock.info">www.chagstock.info