With nearly 10 million combined sales generated from her first three albums - Call Off The Search, Piece By Piece' and Pictures - Katie was one of the greatest musical success stories of the last decade.

Now, having spent 2009 writing songs for her fourth studio album, including teaming up with song-writing partner Guy Chambers (best known for Robbie Williams' Angels and Millennium), Katie is currently in the studio finishing the record with producer William Orbit, who produced Madonna's award-winning album Ray Of light.

Orbit has been running a commentary of the studio sessions on Twitter and Facebook, including 'this is shaping up to be one of the finest things I've ever been involved with. I am hearing what can only be described as magic'. The as-yet-untitled album will be released in May.

Katie will be performing on Saturday, July 10.

Tickets, costing £33 (subject to booking fee), go on sale at 9am on Friday from the Forestry Commission box office. Call 01842 814612 or buy online at www.forestry.gov.uk/music