DAVID Walliams swam the Thames, Eddie Izzard ran 43 marathons for Sport Relief, now a Maidstone teenager is to complete a gruelling two day mountain challenge for the charity.

Former Oakwood School pupil Scott Redington (right) from Longham Copse in Downswood, will attempt to scale the four highest peaks of England on Monday and Tuesday.

Unlike the famous Three Peaks challenge, where challengers drive between the three highest peaks they are climbing, Scott and co-climber David Roberts, both 19, will be on foot.

They will cover 25 miles and climb more than 10,000ft as they conquer the peaks of Sca Fell, Scafell Pike, Ill Crag and Helvellyn.

The duo are both philosophy students, but there will be little time for pondering the deeper questions of life as they race around some of England's most treacherous crags - first scaling the Sca Fell range then heading northeast to Helvellyn.

Scott said: "We wanted to do quite a difficult challenge. If we manage to keep walking constantly it should take 36 hours in perfect conditions.

"We don't want to do any of the difficult sections in the dark so we'll probably walk overnight from the first three peaks to Helvellyn, then rest for a few hours at the bottom."

At 3,209ft, Scafell Pike is England's highest peak. Helvellyn provides possibly the most dangerous section of the challenge with a vertiginous path that runs atop a steep-sided ridge leading out from Helvellyn's summit.

See www.my.sportrelief.com/sponsor/4peakschallenge