Regulation 53: substituted, on 10 November 2011, by regulation 14 of the Gas (Safety and Measurement) Amendment Regulations 2011 (SR 2011/371).
Regulation 53(2): amended, on 4 April 2016, by section 232 of the Health and Safety at Work Act 2015 (2015 No 70).
Regulation 53(4): amended, on 4 October 2013, by regulation 3(2) of the Criminal Procedure (Consequential Amendments) Regulations 2013 (SR 2013/409).
Regulation 53(4): amended, on 1 July 2013, by regulation 8(1) of the Gas (Safety and Measurement) Amendment Regulations 2012 (SR 2012/280).