Cylinders used for the transport of industrial gas by road or rail in the UK are subject to Statutory Regulation. The specific Regulation controlling transport by road and rail is the Carriage of Dangerous Goods and Use of Transportable Pressure Equipment Regulations 2009 (S.I.1348), and is derived from the European Agreement on the Transport of Dangerous Goods by Road (ADR) and the equivalent for rail (RID).

Within the Regulations there is a requirement to subject cylinders to periodic inspection and test. Though cylinders may be transported after their test is due this may only be for the purpose of sending the cylinder for test, i.e. cylinders cannot be re-filled when out-of-test. The test period is defined in the ADR document, but is typically 10 years for most industrial gases. The method of testing is again specified in ADR but there is a presumption of conformity when the cylinders are tested in accordance with specified European Standards, BS EN 1968 for seamless steel cylinders, BS EN 1802 for seamless aluminium cylinders, and BS EN 1803 for welded steel cylinders.

Since July 2006 it has been mandatory for an inspection body carrying out periodic inspection and test to be appointed by the Department for Transport (DfT). This follows an assessment of the body's capability carried out by the UK Accreditation Service (UKAS). Several organisations who have been appointed in this way, and offer periodic inspection and test services, are members of BCGA. (Approved bodies can carry out periodic inspection and test of existing cylinders, notified bodies can also carry out initial inspection of new cylinders) They are:

Air Products Plc (Approved body)
Festival Way Festival Park Hanley Stoke on Trent Staffordshire ST1 5HB		Michael J Dean 01782 219571 01782 215077 www.airproducts.co.uk
Arrowhead Industrial Services Limited (Notified Body)
Orion House 14 Barn Hill Stamford Lincolnshire PE9 2AE		Simon Davies 01780 758550 01780 758551 www.arrowheadis.com
Central Cylinder Testing
Central Lodge Thorpe Wood Selby N. Yorks YO8 3RG		Ian Mitchell 01757 709552
Chesterfield Special Cylinders Ltd (Operating under the control of a Notified Body)
Meadowhall Road Sheffield South Yorkshire S9 1BT		A Harding 0114 242 7515 www.chesterfieldcylinders.com
Gas Container Services Ltd (Approved Body)
Private Roadway No 7 Colwick Industrial Estate Nottingham NG4 2JW		Richard J Barski 0115 9870944 0115 9400813 www.gcs.eu.com
Gaspack Services (Approved body)
Unit D, Gellinhirion Ind Est Pontypridd Rhondda Cynontaff CF37 5SX		Ben Wells 01443 844607 www.gaspack.co.uk
Jackson Keay Gas Cylinder Services (Approved Body)
Private Road No 7 Colwick Industrial Estate Colwick Nottingham NG4 2JW		Andrew Jackson 0115 9381874 0115 9618664 www.jacksonkeay.com
Jesp Engineering Ltd
Units 4 & 5 Bevan Road Industrial Estate Bevan Road Brierley Hill West Midlands, DY5 3TF		Graham Meakin 01384 483144 01384 482802
Strata Technology Ltd
Strata House Batavia Road Sunbury on Thames Middlesex TW16 5LR		Brian Carter 0870 770 6367 www.stratatec.co.uk