Info about this #4 MkI Sniper rifle.

[Surpmil]

Then there was this one, which according to the letter that accompanied it when gifted to someone (who later sold it on to MilArm of Edmonton who sold it on eBay back in 2000) was one of a few made up for use at RSAF Enfield when zeroing newly converted No4(T)s. If that was the case, and there seems to be no reason to doubt the claim, then perhaps they were sent on to Holland & Holland when the job of conversion was transferred there?