2) Rear sight is a half of Fazakerly and Long Branch. The idiot thought the crown on the right side of the aperture was an LB...so that's proven wrong, plus the aperture is marked F on the left side.

Parts from all sources were put in to stock inventory and used, I have just unwrapped two No4 No4 Mk2s this afternoon, and one had a Long Branch barrel band, this rifle hasn't seen the light of day since 1955