Celebrities cycle in to hand over keys to a better life.
Who Wants to be a Millionaire? host Chris Tarrant, EastEnder Adam Woodyatt, stars from The Bill and Olympian Daley Thompson will be among the famous names who have cycled the 160 miles from London to raise money for a 'home from home'.
The 36-strong cycling group will hand over the keys to the Noah's Ark Appeal, which has furnished flats at the capital's old Monaco Cinema and will look after the families who will live there.
The flats, bought by the Rhys Daniels Trust, will be used by families of sick children who are admitted to the Children's Hospital for Wales for long-term treatment. Being able to live close to the hospital - just five minutes' walking distance - will help them continue family life without stress while their children are treated.
Families have previously had to sleep on put-me-up-beds or have had to bear the expense of renting accommodation for many months. They will be able to stay in the flats free of charge.
The Rhys Daniels Trust was set up by parents Barry and Carmen Daniels after they experienced the need for somewhere to live when their children Charly and Rhys were undergoing treatment.
The two children had a rare and incurable neuro-degenerative disorder called late-infantile Batten's disease. They died in 1998 and 1999.
With the trust's help, Home from Homes have also been opened in Bristol, Liverpool, London and Birmingham.
More than 330 families have been helped by the Home from Home centres in the past 10 years.