Fifty staff from TV channels C4 and Five have raised thousands of pounds for Centrepoint by competing in a race to visit London Underground stations that begin with each letter of the charity's name.
The teams raised £10,000 by getting sponsorship for the race and by selling raffle tickets for flights abroad. The race started in Westminster Square with teams instructed to travel from one tube stop to the next to spell out the charity's name with the first letter of every stop visited. To avoid any foul play, each team was required to take a Polaroid photo at each stop as proof of their journey.
The Five team won the competition after completing their journey in two hours and 20 minutes, one minute before the Channel 4 team.
Chief executives of both companies announced they would match the amount raised by their staff.
"It is a brilliant fundraising idea that has been fun and raised a lot of cash," said Anthony Lawton, chief executive of Centrepoint.