I went ahead and emailed my local college regarding their Access to HE (Science) program. This was their response.
"Dear M. Thank you for your email. Your next opportunity to attend the Access to HE application event will be Monday 13th June 6.00pm (stage 1 – written task) and Monday 11th July 6.00pm (stage 2 – computer diagnostics). Please email me to confirm whether you will be attending these events. The hours of attendance per week for the Access courses is around 13-14 hours. Currently the Access to HE Science course is run on Wed, Thurs and Fri, starting at 9.15am and finishing no later than 2.45pm, however please be aware that this is subject to change for next year. You will be expected to carryout independent study during your free time – the exact amount of hours you spend every week on independent study is a decision which you make for yourself. With regards to the resubmission of work, there may be some circumstances where the resubmission of work is permitted but this would be something you would have to discuss with your tutor at the time."
I didn't really want to have to go to college for three days a week but I won't rule it out completely. I suppose you have to do what you have to do. Seize_the_day, I imagine your local colleges would offer much the same time table as above. Perhaps contact them and ask if you can transfer some of your knowledge / work over for marking and complete the course with them?
Something else to consider is how Universities other than RVC rate the Access to HE course....
Cambridge: Attainment of an Access to HE Diploma – with Distinctions in all relevant subject units – can be acceptable preparation for Psychological and Behavioural Sciences and most arts subjects (excluding Economics) at the University of Cambridge. Some subjects may have additional academic requirements, see below and also check for any further requirements/preferences with the individual Colleges. In most instances, an Access to HE Diploma alone is not sufficient preparation to study a science subject (excluding Psychological and Behavioural Sciences) or Economics at Cambridge.In all cases, you should contact a College admissions office to discuss your individual circumstances. Certain subject-specific requirements may be included in conditional offers for particular courses at Cambridge as well. Natural Sciences – A Level Mathematics is required for the Physical Sciences and recommended for the Biological Sciences (although there is a Year 1 for those without A Level Mathematics, the better applicants' mathematical ability is before they come to Cambridge, the better they will get on)
Edinburgh: "We recognise two access courses as alternative routes to studying medicine. College of West Anglia Access to Medicine Course Sussex and Downs Adult College Access to Medicine Course. If you are undertaking or intending to undertake a different access to medicine course, contact the Admissions Office for advice, detailing the access course syllabus and your previous qualifications." (Note: This doesn't state Veterinary Medicine, however it is listed under College of Medicine & Veterinary Medicine. The VetMed degree does not have a section on accepting Access courses - The same applies for Glasgow)
Nottingham: I couldn't find any reference to Access to HE courses on their website.
Personally I would only consider RVC, Cambridge or Edinburgh due to location.