SRH Energy - Jarrow

Preferred Gas - Hebburn

Awp Plumbing & Gas Ltd - Heanor

The Electric Board - Newcastle upon Tyne

EPG (ENERGY Performance Group) - Ilkeston

GMB Northern Electric Industrial N26 Branch - Gateshead

ECBS - Hebburn

Go Green Energy Services (UK) Ltd - Wallsend

Intelligent Gas and Power - Cramlington

Siemens Plc - Hebburn