# The Misuse of Drugs (Safe Custody) Regulations 1973, Paragraph 1


In this Schedule, the expression—
“external wall”, in relation to any room, means a wall which forms part of the outside of the building in which the room is situated;
“party wall”, in relation to any room, means a wall dividing the premises in which the room is situated from other premises under different occupation;
“the Standard of 1963” means the British Standard Specification for Thief Resistant Locks for Hinged Doors B.S. 3621: 1963, as a published on 6th May 1963;
“two-leaf door” means a door having two leaves which either close on to each other or on to a central pillar, and the two leaves of any such door shall be treated for the purposes of this Schedule as a single door;
“sheet steel” means mild steel sheet being not lighter than 16 gauge.

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Source: https://www.legislation.gov.uk/uksi/1973/798/schedule/2/paragraph/1 (the official version)
Page: https://openlegislation.uk/misuse-of-drugs-safe-custody-regulations-1973/schedule-2/paragraph-1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.