So, the camshaft's back from its regrind at Wade Cams of Victoria to 444C 105 degrees... and a load of other impressive sounding numbers which give it TR5 characteristics apparently. Refaced cam followers and a regrind cost a total of $181 ... 85 quid or thereabouts.
I took it up to the guy who's building the engine and he rubbed his hands with glea. All the engine parts are with the machine shop to do their bits, and new old stock vandervell bearings have only to wait a few more days before they're put to work. It's shaping up that I'll be able to drop the car in and pick it up a few days later without even missing a weekend's driving... fingers crossed.