LONDON CALLING: Sammy W. braves travel chaos

The winner of the 2009 London Marathon has set off from Kenya in the hope of making this year's competition, despite continued travel chaos caused by the ash cloud.

23-year-old Sammy Wanjiru, also the Olympic record holder, had been training at home, leaving him in danger of missing the race.

The BBC's Will Ross caught up with Sammy in Nairobi, hours before he was due to set off on an uncertain journey.