Well there are 4 Silver Steel Wheels with Michelin Energy (2 with about 2.5mm and 2 with about 3.5-4, its been a bit since I measured), 1 Black Steel Wheel with a Firestone (about 2.5 mm on it)
I'll go have a proper measure tomorrow but I do remember that they weren't a problem on its last MOT, and they used to complain at 2mm.
Yeah, its close to what I was expecting, so yeah you can have the set on Monday. I'll PM with the address and the phone number (well its very possible to get lost...) and directions from the nearest major road, tomorrow when I'm awake, lol.