Hi,
If you are sufficiently desirous of achieving your ambition to be a veterinary nurse, you should be able to make it.
If you wish to qualify as a 'Registered Veteinary Nurse' you will need to study for and pass the RCVS Nursing Examinations whlst working in a recognised VN training centre.
For more information contact the RCVS -www.rcvs.org.uk.
Good luck!
W