The MRA Service Company Limited (MRASCo)
The Gas Forum
The Water Industry Commissioner for Scotland (WICS)
The Central Market Authority (CMA) Scotland
The Microgeneration Certification Scheme (MCS)
The Meter Operators Code of Practice (MOCOPA)
The Office of Gas and Electricity Markets (Ofgem)
The Water Services Regulation Authority (Ofwat)
The Commission for Energy Regulation (CER)
The Northern Ireland Authority for Utility Regulation (NIAUR)
The Carbon Trust
The Department of Energy and Climate Change (DECC)
The Postal Services Commission (Postcomm)
The Office of Communications (Ofcom)
The Energy Savings Trust (EST)
The Institute of Mechanical Engineers (IMechE)
The All Island Project
Red Island Consulting
The Low Carbon Building’s Programme
The Department for Business, Innovation and Skills
The Greater London Authority
The United Kingdom Revenue Protection Association (UKRPA) 
Independent Gas Transporters’ (iGT) Uniform Network Code UNC 
The Carbon Trust Standard