PArker Hale sporterised LE rifles both np.4 rifles and no.1's right up to the 1970's. The cheap models will just be military stocks and a Parker Hale barrel and a front bead sight. The 'flash' ones had sporting Monte Carlo style stocks.
Your guy probably got the Parker Hale from the stamp on the barrel, it will have been rebarreled with a good barrel when they sportered it.
The Parker Hale sporterised Lee Enfields are all post World War Two.