As I suspected , time served - like myself and many others - have to do an EWPA ( Experienced Worker Practical Assessment ) to get hold of the Blue/Gold card. This seems to cost upwards of £700 - £800 for 1-2 days assessment , would appear to be a bit an industry if I'm honest. One has to provide a portfolio , refs , do an interview , to determine your level of skill .
May come a day when I have to do it , until such times as my green one runs out I'll not bother.
Diggy