Ja, I saw it at Bisley a couple of years ago... got an earful of "story" from Fred the armourer who was trying to sell it... all vague, name-dropping stuff like "Lord Lovat" etc ... "before the war office provided a pattern"... "officers private purchase" ...er... I didn't have a can of bullshirt spray handy, so walked away.
Rob He gave me the same story. That was the last time I saw this rifle until it surfaced again recently.