It's still a good-looking rifle and should be fun to shoot. Do get a magnet and check the flash hider on the muzzle, see if it's original steel or repro aluminum.
Might want to think about having the scope mount holes filled and then re-blue with the correct British color, what the heck, it's a fun rifle, right?
There were some No. 4s converted to No. 5, I believe for use in mountainous Cyprus in the 1950s, or by the Cyprian police after the British left.