Just found this on my tool box after having had the gearbox rebuilt last year so I guess i don't need it now!
https://www.bearingkits.co.uk/Ford-Type-9-
gearbox-speedo-drive-hole-blanking-off-core-plug-kit/624.htm
Before it goes in the bin (or even worse I put it on ebay ) does anyone want it for £5 plus postage (which is £3)?