IW,
As a fellow Flintshire resident and sponsorship applicant, I can but offer the following information:
1) British Airways are the only airline that recruit ab-initio pilots on a continual basis. Phone them up (number on web page) to get an application form.
2) Most other airlines (British Midlands, Airtours, Air2000, British European....) recruit on a seasonal basis. In my experience, this temds to be in the late summer/autum time of year - keep an eye out in flight international etc aronud then!
Best of luck!!
Cuban_8