Jamie Laing is in a world of pain four days into his 150 mile five-day ultra marathon challenge for Comic Relief and there are growing concerns he may have to abandon it due to medical grounds.
He is now half-way and has so far raised over half a million pounds for good causes, but the BBC Radio 1 DJ, 36, admits that he may have underestimated just how tough it would be, even fearing that he had broken his foot.
