There's an ex-serviceman, name of Mark Newton, who served with the 1st The Queens Dragoon Guards, and was injured in Cyprus while on attachment with the UN there. His leg injury means he can no longer work, and he is doing a charity run round the coast of Wales and Offa's Dike ON A MOBILITY SCOOTER. 1200 miles in 46 days.
His website is here, with details of the route and sponsorships. He's camping out every night, and the logistics of that, and the arrangements for fresh batteries, seem quite a challenge. He's looking for pledges of money, and also people to provide a bit of land for an overnight camp, and publicity, poster display etc. to spread the word.
The charities he is supporting are Help for Heroes, the Royal British Legion, and his old Regiment. All things I would support, personally. Pop over and have a look, and if you feel able to help, please feel free to do so.