The Enfield examiner's mark on the top of the front pad is either not there or, if present, is hidden by paint. Unless it is there, we have to assume that this rifle was converted by Holland and Holland in 1942 or later, and that it is NOT one of the 1,403 converted by RSAF Enfield.
It has been reported that it took time for the markings' system to become standardized in the UK(Canada
was a different situation). This Fazakerley rifle, apparently being an early conversion, it seems to have pre-standardized markings. This of course makes it much harder to verify.
Think of it like a vintage 1942 Willys MB Car 5 Cwt (1/4 Ton Truck to Americans) ... it has a serial number but Heavens forbid, no Vehicle Identification Number (VIN) tag!