Unfortunately, although we often give tips here, people rarely report back with their experience after successfully completing a course. The consensus of opinion of the TEFL.net moderators however, is that CELTA is generally the same quality wherever you take it. Anything else that the course provider might be offering - including the quality of the carpets and cafeterias in his college, are secondary, and not subject to Cambridge scrutiny. Please check some very recent threads on the subject, especially concerning CELTA courses in LONDON, and let us know how you got on. Good luck.