Harry Judd has thanked fans for their backing after McFly had to postpone their tour.
The drummer, who has injured his neck, promised fans a "rad" time when the tour gets going in September.
Harry, 30, announced on his Instagram page that he had a slipped disc and said he was "gutted" the band's Anthology tour was delayed.
It was unclear how he sustained the injury.
He wrote to his 500,000 followers: "I'm absolutely gutted to say that we've had to postpone the tour as I've herniated a disc in my neck.
"I've honestly tried everything to make it work, but I'd never want to do a tour where I wouldn't be able to give you guys the 110% performance you deserve every night."
He concluded: "I'm going to do all the rehab possible to get myself ready to do the most epic shows we've ever put on."
The band's official website said Judd had "an acute disc herniation" at C6/7 level, the section of the spine near the base of the neck.
Band member Tom Fletcher said: "Sorry we've had to move the tour. Completely Harry's fault. All complaints to be sent to @mcflyharry. On a more positive note, it gives Danny more time to learn the words to our songs. See you all in September."
Harry won the 2011 series of BBC One's popular ballroom series Strictly Come Dancing and earlier this year he took part in Sport Relief which raised £56,838,844 for charities and ventures in the UK and abroad.
Chart-toppers McFly, whose hits include All About You and 5 Colours In Her Hair, have recently started touring in their own right again after a stint with boyband Busted.
McFly's Anthology 2016 tour will see the band, including Dougie Poynter and Danny Jones, play three-night residencies in cities including Dublin, Manchester and Glasgow.
Tickets for the original dates will be honoured at the rescheduled shows.
For more information and details, visit the official site.