Got home this evening and found a small hedgehog on front door step. Stepped over him and got kitchen scales and then back out and weighed him and he is 284g, well below survivable hibernation weight. Might seem unlikely the chap would survive winter due to weight. Watched a programme on TV the other day and also read various articles on line which advocates bringing in underweight hedgehogs in for safe keeping around this time f year. I have done that and he is now in his own box in the conservatory which is also where I winter the guinea pigs. I've provided chicken cat food, both dry and wet food. I will contact rescue centre tomorrow to see if they can take him. I do have a spare guinea pig hutch in the garage and wonder if that may be better for him. Although not heated, it doesn't freeze in the garage. I did read the key is to stop hibernation occurring, but no sure how that is achieved.