being the lazy bastard i am - i decided to not check for a boost leak..as i dont do a large amount of miles and it was still performing ok..
Drove to manchester from blackpool today, within 5 motorway miles i had no turbo boost whatsoever, i'm assuming that's just a fail safe as if i turned the car off and on again the turbo came back on. The turbo went again on the home..
Does this sound like a nailed on boost leak then, as soon as i hit just under 2000 revs it just sounds like air escaping from the bonnet!
off work all week this week so will have more time to look into it.