Also be aware that the UK CAA may not recognise EASA training at these ATOs because their approvals only came into effect the day after exit day. UK only recognises EASA certificates 'current and valid' at exit day. This may not be an issue if they have parallel UK approvals. selfin had an observation about the requirement to test in EASA airspace only applying to a certain group of ATOs but I cannot, I'm afraid, recall the detail. He may be able to help.