hello there! I see you are a fairly new pprune member and so you can be forgiven for not having done this, so before you get lynched by the masses here, try a search (top right) on CCAT (Cabair) and Oxford.
You'll get plenty of information like that, enough to keep you in reading for over a year!! This is a very well covered topic on pprune.
For what its worth, I've decided to go to Cabair. Go and have a look around both of them, I went to one of Cabair's 'saturday seminars' and found them to be excellent. I can't justify spending another 10K+ at Oxford