Some history about Lee Enfield rifles might be important. My reference (Lee Enfield No. 4 and No. 5 Rifles - by Charles R. Stratton) lists 7 factories in four countries that made No. 4 Lee Enfield Rifles. I do not have the same references for No. 1 (SMLE) Lee Enfield rifles. After WWII, most countries sold off their bolt action rifles to raise some cash to equip their armies with semi-auto or select fire rifles - after seeing the effectiveness of USA soldiers with their Garand rifles - so, many Lee Enfield rifles (both No. 1 and No. 4), many Swede Mausers (M94, M96, M38), many captured German Mausers (GEW 98, K98), and others. So, post WWII - the world was "awash" with former military bolt action rifles and parts, which turned out to be perfectly adequate for much hunting use. Many companies were formed to acquire military made guns and convert them to sell as "hunting rifles" to customers. I had read that is how SAKO got their start, I think Parker Hale had mostly made sight assemblies, triggers, etc. - "small parts" - for the "big guys" like BSA, etc. Many "home guys" decided to "save a buck" and did the conversions themselves - as a result, today we have a whole "mishmash" of varying quality - in most cases, many of the Lee Enfield rifles (and others) last saw a military armourer in the 1950's or so - what we see today is likely a "long way" from what the WWII soldiers had.
I could be corrected on about any point made above.