Hi,
You need to know why you want to be a veterinary (NB SPELLING!!) surgeon, and do not trot out the easy answer 'because I love animals' !
Mention any voluntary (NB SPELLING!!) work with animals which you have done in the past. You must say that you are willing to do any jobs you are given, however unpleasant ( there may be a lot of cage cleaning)
Know what field of work you would like to be in if and when you qualify as a vet.
Go to the Royal College of Veterinary Surgeons web site (www.rcvs.org.uk) and do some background reading about the veterinary profession.
Decide which University Veterinary School you would like to attend, after visiting their web sites,
Good luck.
W