Fitted!
From this:
To this:
Side view
The wheels fit straight on the rear but the standard studs are not long enough - I only got 5 turns on the nut.
The 20mm spacers push the wheels out so that they "fill" the arches.
I converted the fronts to studs (all from Brickwerks).
Just got to work on some centre caps.

Loctited in - big thanks to Melmelody for the abundant supply of loctite and bearing fit.
With spacers fitted (front):
The studs give me 8 turns of the nut which is more than the minimum required (7) but do not come flush with the nuts.
The studs is recessed by about 3 mm into the wheel nut, this makes me nervous but it is okay according to the spacer paperwork.