McFly are the latest act to join this year's Forest Commission Forest Tour which takes place around various woodland venues in the UK over 5 June to 19 July.
The pop quartet will perform at High Lodge, Thetford Forest near Brandon in Suffolk on Friday 11 July. They join the likes of Crowded House, The Charlatons, Status Quo and KT Tunstall on the bill.
James Morrison, however, has had to pull his appearance at Delamere Forest, Cheshire on 14 June because of recording commitments. Ticket holders for the gig are asked to contact their point of purchase for refunds.
The singer-songwriter, who is currently writing his second album, said: "I’m afraid that due to some diary changes attached to the recording of the new album, it will be impossible for me to get out of the studio, play the gigs and put on a great show.
“I hope everyone concerned will understand and know that I’ll try my best to make it up to you as soon as I’m able.”
Organisers will be announcing a replacement act for James Morrison on Monday 14 April. Check back to find out who it is.
Tickets for the McFly show cost £26 and go on sale 9am Friday 9 April. Click HERE for the full line-up for the festival.