Finally, I`ve found another one. I have a No4 Mk1 with the same FDM markings on the bolt, receiver and barrel I even have that really faint word to the left of No4 Mk1 which I was thinking ended in lly. My post is here:
Lee Enfield markings
Is your muzzle cut?
Does your barrel have a section made smaller like mine?
Is opposite side of butt socket stamped with FP?