Is it just me, or does that site not come across as slightly dodgy?
They say they are registered with the UK Register of Learning providers, but that organisation isn't a govt organisation at all. In fact they are so wrong, their still using the "Scottish Executive" logo rather than the Scottish Govt logo. They are registered under a company called Elms Hunt International Ltd who run a lot of these sites such as "HotCourses" and under their WHOIS information on their website they have listed their registrant type as "Unknown".
They also list them being a part of the Institute of Certified Bookkeepers, but the ICB don't have any information or links to them as partners.
Apparenlty you'll get a Diploma from the Stonebridge Associated Colleges, I've looked at their website. Why aren't they using a .ac.uk domain? Why do they not provide company information?