Yes, there is a spigot bearing in the end of the crankshaft, see photo below. It can be removed with the flywheel in position, but either way you really need a slide hammer to get in behind it to get it out. I've not removed it yet, but I have a LUK replacement ready to go in.
I could do with a couple of bits for the clutch mechanism, a couple of bushes that hold it in place either side are a bit worn but I can't find them anywhere, so the old ones may have to go back in. I suppose I could see if I could get at least the metal one made up at the place that resurfaced the flywheel.
Thanks re: the snapped exhaust stud. Yes, access was difficult especially on my back under the car. One of the remaining studs made it especially difficult to get mole grips on it, but the extractor I bought really was a game changer, don't think I would have got it out otherwise!
Cheers