They do still occasionally pop up in the mummified state, particularly in British commonwealth countries. I'm in New Zealand and have been lucky enough to get 4 of these. One degreased by the previous owner and I use it for service rifle shooting.
Another will be degreased and converted to a T replica.
The others will remain as they are. Unissued parts are s bit of a challenge here. Bolts and bolt heads are the hardest. But you can try marstar in Canada. The ammo stripper clips go for silly money now too.
If you need reference material try ian skennertons book on lee Enfields.
Front side blades are easy to find on Ebay.
At the moment I'm trying to find the best substance to preserve the wood on the degreased one. Originally boiled linseed oil but times have changed. Tru oil or renaissance wax are looking like the likely candidates for me.
Actually, the stripper clips are available here for not that much. 2.60 each unless you buy in bulk from Numrich (gun parts corp). Oiler kit has 10 stripper clips with them at $16.75 which makes them about 1.70 each. They are around on Ebay too.