Ofgem
http://www.ofgem.gov.uk/Pages/OfgemHome.aspx
IGEM
http://www.igem.org.uk/
ELEXON
http://www.elexon.co.uk/
VESMA
http://www.vesma.com/
IAM
http://www.instam.org/
DEFRA
http://www.defra.gov.uk/
P.I.G
http://www.pipeguild.com/
AIGT
http://www.aigt.org.uk/
NMO
http://www.bis.gov.uk/nmo
Smart Meters
http://www.smartmeters.com/
Institute of Energy and Sustainable Development (IESD)
http://www.iesd.dmu.ac.uk/
Gas Safety Trust
http://www.gas-safety-trust.org.uk/
Flonidan
http://www.flonidan.dk/
FMG
http://www.flowmetergroup.com/
BSI
http://www.bsigroup.co.uk/
EUA
http://www.eua.org.uk/
GISG (Gas Industry safety group)
http://www.gisg.org.uk/
CoGDEM
http://www.cogdem.org.uk/
CIBSE
http://www.cibseenergycentre.co.uk/
ESTA
http://www.esta.org.uk/
t-mac
http://www.t-mac.co.uk/
Department of Energy and climate change
http://www.decc.gov.uk/
Gas Health and safety
http://www.hse.gov.uk/gas/
Climate action
http://ec.europa.eu/dgs/clima/mission/index_en.htm
The National skills academy
http://www.power.nsacademy.co.uk/