Hi, Georgina,
You will find all the information you need in earlier posts on this site.
However, to recap, you need the best range of O levels at A grade which you can achieve, followed by A levels in Chemistry and Bilogy and physics or Maths all at A or A*.
The veterinary course at University lasts for 5 years, and the pressure of applicates is high. and only the very best applicants succed in getting a place.
You can get more information on www.rcvs.org.uk and the websites of the universities with vet schools: London, Liverpool, Cambridge, Bristol, Glasgow, Edinburgh and Nottingham.
W