Royal Institution of Chartered Surveyors: www.rics.org

Building Research Establishment: www.bre.co.uk

National Energy Services: www.nesltd.co.uk

Energy Savings Trust: www.energysavingtrust.org.uk

Carbon Trust: www.carbontrust.co.uk

UK Surveyors: http://www.uksurveyingcompany.co.uk

Fast Surveyors: www.fastsurveyors.com

Rental Property Knowledge: www.landlordzone.co.uk

Surveyors Ombudsman: www.surveyors-ombudsman.org.uk