Well I managed to walk the burning pit of coals (regency) and survive. I am so relieved to pass but it was a pretty close call. The one thing I will give them is that they really know what to look for. In 5 minutes they had pretty much located a dozen things that they were interested in. It took 2 hours and 5 guys to inspect my car and I was a nervous wreck by the end. There are a couple of points that I feel worth mentioning for people that have to go down the same path:
1. Be friendly, courteous and don't argue.
2. Don't lie to the inspectors (don't tell them everything but just don't lie, they know!).
3. Be on time for the appointment.
4. Your car must be STOCK mechanically and electrically.
5. They follow all vaccum lines in the engine bay and under the dash so remove them from boost controllers, gauges etc. before inspection.
6. You will need the stock steering wheel. You may be able to argue the point but even if you do win you just piss the guy off.
7. Front mounts will fail because they change crumple zones. Turbo mods are a no-no for emissions and brake upgrades will need an engineers report.
8. Dress conservatively and neatly. Try and give the impression of respectability/responsibility. I went in uniform and I would bet that it was the biggest determining factor for me passing.
9. Ask lots of questions and try and develop a repore with the inspector. Don't blatantly arse lick but try and keep them in conversation.
10. Fully degrease the living shit out of your car just before inspection. Make sure that it is dry before you are inspected so it looks like your engine bay is normally clean with no leaks.
At the end of the day I thought that the guys there were very fair and professional but I am sure that if you pissed them off they would make life very hard for you. They found everything on my car that had been modified and also checked for normal compliance stuff like child restraints, fuel filler and seat belts. The moral of the story is: DON'T GET DEFECTED! I hope this helps someone.