I've a number of questions I can't answer.

Why use a No.4 when Lithgowicon had everything for the No1 and went down the route of the 7.62mm No.1 as you would expect.

I also note the rifle was originally a T sniper anyway so why go to the hassle of fitting another type of scope, and fill the holes from the correct scope pad screws? The hole from the front pad front screw is visible.

The markings are hand stamped and Lithgow were pretty good at using a pantograph and it would have been easier to pantograph the markings on that surface.

I did note the stock has a Lithgow marking so it's either a No.1 stock or a No. 4 reworked by Lithgow, they appear to remark other manufacturers wood with their own marks after a FTR.

Which brings me onto my next question. In the early to mid 50s Lithgow were FTR ing everything and they were finished in park and FTR marks, new markings were made in the park and so appear in the white. Does this rifle have any FTR markings? It isn't parked and the new markings are painted over by the looks of it.

Just a few thoughts.