Both groups along with JLS will host their own takeover spots on Capital FM in support of their Help a Capital Child appeal weekend, which runs between October 26 and October 28.
Prizes will be auctioned off as part of the three days of special programming; including a backstage meet and greet with Ed Sheeran in Dublin, tickets to the Twilight: Breaking Dawn - Part 2 premiere and a chance to see Example at Stereosonic Festival in Sydney.
Dalton Leong, Managing Director of Help a Capital Child said: "This month marks a year since we launched our first ever Capital FM network charity appeal, which was a huge success and raised over £180,000.
"Through the great work of our charity, we're delighted to continue to support the work of Teenager Cancer Trust, making such a difference to so many young people living with cancer across the UK. I am confident that this year's appeal will create another landmark and we thank our amazing listeners for getting involved."
The money raised will go towards funding specialist care units and care for young people living with cancer across the UK, through Teenage Cancer Trust.