I think the other videos he has done may be of more interest. Especially the ones in the construction yard. Plenty of old CMP's, Jeeps, and a gantry Austin K6 to name a few.
The film clip is now available on line as part of the BFI unlocking film heritage programme.
Here is the link https://www.macearchive.org/films/atv-today-12091974-raf-cottesmore
These taps were also used on some outboard motors. Corks are available from Sheridan marine. https://www.sheridanmarine.com/product/british-seagull-outboard-metal-fuel-tap-overhaul-kit
I seem to remember someone replacing the corks with nitrile O rings mounted on brass spacers.
Chris
I have the spanner for the head but one problem is not all the bolts are fully accessible to pull on the spanner. Some you can only push the spanner which I feel would give a variation in tightness!