I would agree that you should also consider Turkey.

You can contact these folks.

Naples Air Center (NAC) Flight School in Florida

Unless it has changed recently..

Go to the CAA House at Gatwick with completed paperwork including complete actual logbooks with times in require format, P1, P2, etc.., take initial Medical, Vision tests at CAA House, (later medical can be taken with approved medical in US), English Proficiency exam, taken online with Berlitz?, take all 14 written exams at NAC here in the US if you are approved via experience and do not require the one year of academic classroom attendance, speak with Airbus Miami seeking EASA ATP type ride with EASA approved instructor/ examiner..

There are a couple of online prep courses in the UK that have question banks for all 14 exams..Bristol is one..

The books alone are over $1000. Might find used on eBay UK.

For the exams, if you don't sit them at say NAC in Naples, these are run say quarterly, at CAA House in Gatwick. Check for accuracy but you can only fail so many of the 14 exams, and can retake only twice? Also must accomplish all 14 in a set period of time..

Also look up CAP 804 Part D

Still interested?