The UK CAA is the most restrictive, each state has its own guidance material which is meant to follow EASAs, if you look on their website or contact the authority they can tell you what tests they accept. It is now the case you can be denied in one state but approved in another, the best suggestion would to look into the current testing options and try and find a place which has your most favorable option, however, I would highly suggest not doing the CAD test as its flawed.