Hi, Catherine,
You have three alternatives :
Veterinary Surgeon
Veterinary Nurse
Unqualified worker in a veterinary practice.( not to be recommended)
If you go to the message from Freda Andrews, six posts below this one, you will see what you need to do to become a vet.
For more information go to www.rcvs.org.uk.
You have many years of hard work ahead of you if you are to achieve your ambition. Good luck!
W