Interesting- I emailed them a week ago and have had nothing back. They are probably right in the sense of their T & Cs but if they do not complete the work you would be entitled to a refund. It is probably easier to get the money back through your bank.

I quite agree. I've basically fallen for the same [problem]. A week after I paid, one of their assessors got in touch to say that they were acting fradulently, and that he would be able to do the assesment himself for a reduced fee. I've since reported them to Trading Standards, BBC Watchdog and obviously want to post here to to maximise their reputational damage. Best way to get a refund is to approach your card provider and explain the situation and ask for a "section 75" payment dispute. This will probably work and get you your money back after a bit of effort and a time. If not Consumer Direct is your friend, and complain about your bank at the same time!