Viridian Group Ltd
120 Malone Road
Belfast
BT9 5HT

Tel: 028 9066 8416
Fax: 028 9068 9128 

The Utility Regulator
http://www.niaur.gov.uk/

Consumer Council for Northern Ireland Independent help and advice
http://www.gccni.org.uk

Department of Enterprise, Trade and Investment
http://www.detini.gov.uk/cgi-bin/gethome

Commission for Electricity regulation
http://www.cer.ie/