Everyone asks this. No clutch slip as I fitted a clutch a little while ago rated to 560 lb/ft at the wheels.
Imported from the USA - probably the strongest clutch you can fit to the 1.9.
MOT - Well, not sure if you've noticed but revving a car up under load uses a lot more fuel than revving it up stood still with the car in neutral. The car does not smoke like that when revving it in neutral, so less fuel - less smoke, and a pass with distinction come MOT time.
Also, in that video WOT is applied at 1500rpm which is way out my turbo's boost pattern, so this is why it smokes a lot, then you start to hear the turbo whistling loudly, then the smoke clears and you get full boost and power for the rest of the rev range.