NHER
http://www.nesltd.co.uk/
The nations leading energy assessor accreditation scheme.

Pro DEA
http://www.prodea.org.uk/
Energy assessors kitemark organisation.

The HCR Register
https://www.hcrregister.com/home.html
The national database of all EPCs lodged.

Independent forum for Energy Assessors.
http://www.homeinspectorforum.co.uk/
For advice and discussion from many independent energy assessors.

Energy Saving Trust.
www.energysavingtrust.org.uk
Impartail advice about grants available, and financial help.

Advice about HIPs from the Government.
http://www.homeinformationpacks.gov.uk/

MyHIP.
http://www.myhipsells.co.uk/home.aspx
Independent HIP Provider.

Advice on "green technologies".
http://www.lowcarbonbuildings.org.uk/home/