Managed to get a copy of Fantastic Four on Blu-Ray from the Dundee Branch of Head Entertainment. Its the film that came out in 2005. I think this is the cheapest price that I have seen on its own. It wasn't in the deal listed a couple of months ago. I don't know about the other branches so it may be an idea to phone ahead. There was over 10 copies when I was in on Saturday.
Hope this is help to someone