Ultimately the only way to practise as a veterinary surgeon within the UK is by getting a veterinary degree that is RCVS approved or attaining one from elsewhere and then sitting the RCVS exam to become a MRCVS.
So your options are a UK university, European vet schools, many of which are RCVS accredited or further afield.
Utrecht, Ghent, Kocice and many others typically have lower entrance requirements than the UK vet schools. You will be able to do more research on these to see if you meet their requirements - a lot of them are 6 year courses but are taught in English. Complaints would be graduates seem less skilled than those from UK schools with less clinical practice/ability but whether this is the case or just rumour.
UK schools - you have the traditional 5 year course. Some universities run foundation/gateway programs which are 6 year degrees but typically have far more competition as they are much smaller year intakes. If you have a degree that is in a relevant subject (e.g. bioveterinary) and a good enough grade you can apply for graduate entry courses which are 4 years or some universities standard 5 years. The disadvantage to this is 8 years of university study.
As far as I am aware these are your only options.