Thank you for taking this baby in. Please read this links for some general info on woodies and taking care of new/found pigeons:
http://www.pigeons.biz/forums/f47/
http://www.pigeons.biz/forums/f20/
http://www.pigeons.biz/forums/f6/
Those should get you started. Once he has been warmed and rehydrated you could try giving him Ready Brek made up with warm water, which you will likely have to hand feed him (just place bits in his beak and he will swallow). We do have UK members who will be on today and will help you with his specific care. Until then please keep him warm and hydrated and check back here often as more people check in.
http://www.pigeons.biz/forums/f47/
http://www.pigeons.biz/forums/f20/
http://www.pigeons.biz/forums/f6/
Those should get you started. Once he has been warmed and rehydrated you could try giving him Ready Brek made up with warm water, which you will likely have to hand feed him (just place bits in his beak and he will swallow). We do have UK members who will be on today and will help you with his specific care. Until then please keep him warm and hydrated and check back here often as more people check in.