The bike I found last week looks just like yours. I pretty confident mine is all original. I don't know if this helps but as I disassemble the parts and clean them up, here's what I have found as standard equipment:

Nervar 3-bolt cottered crankset with 52t and 40t chainrings.
Chain made in England by Hans Renold Co.
Wide flange front hub with Raleigh Industries marking and 32 spokes
Rear flange is a "Flip Flop" hub with 40 spokes. No RI marking that I can see
Both rims are marked Sturmey Archer 27x1 1/4
5 cogs on the freewheel
Lockring but no cog on the fixed side of the rear hub.
Wright Saddle Co. model W3ST
Sidepull brakes and levers marked Made in England. Maybe by "Dunelt"?

I can put up some pics if you want to see any of it.