Hey,
i can probably help you with that. I've applied at OAT and been to the admission tests. I had never heard about Cabair or other schools in England before since I live in the south of France. However, all of the guys I met at the assessment test seemed to think that Cabair or other schools in England don't offer the same privileges as OAT, especially at the end of your training. I've understood that your chance of being hired after your training at OAT is a lot higher than if you come out of other schools. Eventually I failed the compass test (maths part) but I have a place at Embry-Riddle Aeronautical University, so that's probably where I'll be next year. What I mean is that you don't just have to look at OAT, Cabair or the equivalent in England, you can also check out universties in Europe, or the States. It may open a lot of other options to you, to be taken seriously.
Hope this has helped,
good luck
pilotpassion