It is illegal to keep or release grey squirrels without a licence from Natural England. From March 2019 Natural England permanently stopped issuing licences for the rehabilitation and release of grey squirrels.
Unfortunately, due to this new legislation, The Wildlife Haven no longer holds a licence to keep or release grey squirrels.
A wild adult squirrel that allows you to approach it (excluding tame ones found in parks) is quite possibly in need of attention. This does not mean that it will let you handle it safely. Those teeth and claws will still work! However, don’t be heavy handed as squirrels can easily be hurt. If the squirrel is not very mobile and you want to help, keep calm and get organised! Have a squirrel-proof container ready. A cat travel basket or similar would be suitable - preferable made of metal. Arm yourself with thick gloves and then try to pick up the squirrel by covering it with a large towel or blanket. Scoop it into the container and leave the blanket in with it.
Unless it appears to be an emergency, we suggest that you keep it warm, quiet and dark to allow the squirrel time to calm down if necessary.
Don’t try to force the squirrel to eat or drink, especially if it may be suffering from shock.
Try to get some idea of the problem. Are there obvious external injuries? Can you see any swelling (particularly around the head)? Are all limbs working?
Contact your nearest licensed wildlife rescue centre for advice.