Hi I'm a second year on the new C21 course. Most of the positives are also negatives and the negatives positives, it all depends entirely on what you are looking for. Cardiff's course is pretty well centred on self study though this does not in anyway mean you are left on your own and unsupported and more that there are very few lectures (about 4-5 hours a week after Christmas). Contact hours instead take the form of clinical placements (1 day per week after year 1 Christmas), small group tutorials and case meetings (after Christmas), in addition many of the first semesters contact hours are undertaken in the anatomy centre for dissection and in other practicals. When I say after Christmas it is because the first 11 weeks are currently made up of something called platform for clinical sciences. For me I found this the worst part of the course (mostly as we were guinea pigs (or pioneers as they preferred to put it), it is probably the most intense part of the first 2 years and involves coving the basic science of pretty much everything human although not in great detail and you rotate back round it when you start case based learning (after Christmas) this also the period where you have the most lectures and structured small group tutorials.
after Christmas it all changes and for me I would say for the better, you star cases which basically involves you being in a small group (approx 10) and 2 weeks of fun! Each case lasts 2 weeks and in the first year they are essentially system based e.g. GI they provide a scenario at the start of the first week, as a group with a facilitator you develop learning points and go off and research them. You also have anatomy sessions, practical tasks, lectures and small group tutorials to support your learning and of course clinical placement. This same format continues for year 2 except it gets a bit more clinically focussed and more interesting! As for practicals this year we have taken bloods from each other, put drugs in each others eyes and numbed each others arms with local anaesthetics then poked each other with pins so pretty good fun! Essentially I will leave you decide what you view as positive and negative aspects! The staff are also fantastic and a mix of scientific and medical backgrounds with many previously or currently involved in some pretty interesting research.
The community in Cardiff is lovely it is a very happy and friendly city (albeit very wet unless you come form somewhere like west Wales and find it comparatively dry) it's a great place to live with all the best facilities of a capital and something to interest evryone
http://www.walesonline.co.uk/news/wales-news/cardiff-voted-one-best-cities-7503586Cardiff is also a great place for clinical placements as you will by the time you qualify have had the opportunity to work in almost all the country in both metropolitan and rural communities!
As for the interview it's been a quite a while but it was essentially a standard conversation, my Cardiff interview ended up as a chat about my PS and hobbies while my friends ended up as involving a lot of questions about the NHS so you are exactly right there is no way of really anticipating what will come up.
Hope that this helps