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THE GUNMAKERS’ COMPANY
The Company was incorporated by Royal Charter on 14 March 1637 in the reign of King Charles I. Under the Charter the Company was given
control over both the gunmakers’ craft, and the safety of small arms,
through powers of search, view, gauge, proof and marking.
The Company’s power to prove small arms has continued to this day, and has
been confirmed in various Gun Barrel Proof Acts. Thus the Gunmakers Mark,
the letters ‘GP crowned’, originally approved by Charter, is still in use
today. The Company is one of the few in the City which still carries on the
purpose for which it was founded. Since 1988, the Company has also had
responsibility for certifying deactivated firearms.
The Company is unique as a City Livery Company in always having been located
outside the City walls, due to the noise and risk originally perceived from
proof activity. The Company’s first buildings in 1637 were by Aldgate, and
then in 1675 it moved to the present site in Whitechapel. The buildings
comprise the Proof House built in 1757, the Receiving Room designed for the
efficient delivery and inspection of weapons and the Proof Master’s house
now used as offices, both built in 1826, and various workshops. Next door is
Gunmakers’ Hall, built in 1872, sold in 1927, but repurchased in 2007.
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