I am almost positive that Edinburgh, Glasgow and RVC are the only schools in the UK that ever received full accreditation from the AVMA. Dublin was in the process of being accredited around 3 years ago, and is probably still in the process. It is extremely uncommon for a school to simply lose accreditation (it is probably as hard to gain it as it is to lose it, unless there are some drastic changes). Sometimes the school can lose its full status, but even than graduates still technically have a degree equivalent to one from North America.
On the other hand, maybe something happened 7 years ago that I am totally unaware of and that no one has told us about (including the AVMA!)