I know this post is nearly 4 years old, but i will give my thoughts. I've recently completed a CertHE with the OU (Social Sciences), and have been enquiring about starting as a first year undergraduate mature student in History. Whilst it's a different subject, they're both essay based subjects. I've had very positive feedback from Nottingham Trent, Keele, Hull and UAE, almost promising me an offer if my personal statement is up to scratch. Nottingham, Newcastle, Exeter and Lancaster have all also been very positive, and have urged me to apply, with the only requisite being that they want to see written work/ interview. The only lukewarm responses i've received so far are from Durham and St Andrews. So with it being a level 4 qualification it is possible to transfer to the first year of another subject.