Back from PSI Tuning! and the results are very good indeed.My turbo wasn't too badly sooted up but there was a build up that has now been removed. On the drive back I've noted there is a noticeable difference in spool up. It now builds boost a lot quicker and also holds it for longer as well. I also noticed a couple of extra MPG on the way home, too.
Labour worked out at 1hr which is about £45'ish at PSI. Andy at PSI mentioned that he may able to get the Innotec stuff direct from the supplier so anyone looking to get this done at PSI it might be worth letting them know so they can get a price etc.
All in all well worth it, car is certainly a lot less laggy. I'll update once I've done the monday morning commute to work and report on the fuel economy a little more.