They will be on the second stage on Saturday 19th July.

They join the likes of Sam Bailey, The Human League, The Boomtown Rats and Ms Dynamite.

The twins are perhaps best known for their stint on the X Factor, and on Eurovision.

Organisers of the festival say they are delighted to welcome them to GuilFest for the first time.

Meanwhile, Surrey based rockers Arcane Roots are also confirmed to appear on Saturday 19th July.

Guitarist & vocalist Andrew Groves and drummer Daryl Atkins are known for their energetic and passionate live shows.

The band have since toured with enormously popular artists such as Biffy Clyro and Twin Atlantic.

Also confirmed are London-based dance trio I See Monstas and French electronic metallers The Algorithm.

Organisers say the line-up is expected to grow over the coming weeks.

Tickets for the festivals which runs on the 18th, 19th and 20th July are available from the festival’s official website.