G, GB or GBF
Greenwood and Batley, Leeds, UK. This company manufactured Ammunition from an early stage, finally ceasing production in the late 1950s. They had a filling factory at Abbey Wood and later during the 1939-45 war a filling factory at Farnham. The headstamp code G, denoting manufacturer, should not be confused with G as in GIV indicating a tracer cartridge. During WW1 Greenwood & Batley are known to have produced in excess of 705 million .303 Mk 7 cartridges
