v_e; If you are serious about this 50 quid business, then please look at;
http://www.oandf.co.uk/
One of my daughters has worked there with injured wild animals, for several years. Her speciality is looking after the large, injured birds - Hawks, owls etc. though she deals with all creatures great and small, (needless to say, I'm incredibly proud of her) when they are recovered they are returned to the wild.
Fans are locals such as Pam Ayres and Jethro Tull, some time ago, Tull brought them an injured bird found on his land, was so impressed he gave them a cheque for a thousand pounds and left with a couple of hedgehogs for his garden. Every penny is appreciated and put to good use, that I can guarantee.