ATCA/ATSA jobs - The Pay
I'd go with the above comment but outside of NATS the pay is pants, you are looking at anything between £16k and £21k dependent on experience. There are a few airports that will pay more, but it's like the ATCO's, a sliding scale dependent on your experience.
If you are fresh out of school then I'd go with the CV route and don't pay for an ATSA course as it could be a waste of hard earned.
Also consider Aerodrome FISO training, if you don't know what I mean PM me and I'll try and explain as best as I can, or get someone more 'qualified' to do so for you.