again very insightful, thanks BackPacker.
The reason I want to transfer my license over to the UK is that it's where I've lived for a long time and possibly where I will live until I retire. So having to jump through complicated hoops like I am at the moment to get another authority to issue me an SEP renewal is a headache I want to avoid in the future.
DGAC have issued me a list of UK examiners already registered with the DGAC but don't specify where they are based in the UK so not an efficient option. Don't know if the Examiners at my flight school will be interested in going through all the administrative steps to register with the DGAC as well as it seems they will need to take on online test and pay a fee. Will see what they say...