“the 1984 Act” means the Road Traffic Regulation Act 1984 (c. 27);

“the 1991 Act” means the Road Traffic Act 1991 (c. 40);

“the 2004 Act” means the Traffic Management Act 2004 (c. 18);

“the Act of 2003” means the London Local Authorities and Transport for London Act 2003 (c. iii);

“borough council” means London borough council and includes the Common Council of the City of London in its capacity as a local authority and “borough” and “council” shall be construed accordingly;

“immobilisation device” means any device or appliance approved by the Secretary of State under section 104(9) of the 1984 Act;

“London authority” means a borough council or Transport for London, as the case may be.