Pep Boys sells a trailer hitch ball double-box-end spanner that is perfect for the gearbox drive sprocket nut and oil sump screen nut.
Posi-Lock sells a 3" 3-jaw (thin jaw) puller that is perfect for any manner of Britbike pulling tasks.
You'll ned a valve spring compressor designed for the task, there are several simple C type models out there.
A clutch plate holder tool is handy to have, you can make one from a pair of plates (one each, plain & friction) and an 18" piece of 1/2" electrical conduit flattened on one end.
author "Old Bikes"
too many bikes to list, including:
JPN, 952 Prototype, MkIII Interstate, Combat Dunstall, VR880 SS, Triton