CHAS: The Contractors Health and Safety Assessment scheme
This shows compliance with important parts of health and safety law (the core criteria described in the CDM regulations).

SMAS: Worksafe Health and Safety Scheme
This shows compliance with important parts of health and safety law (the core criteria described in the CDM regulations).

NICEIC: National Inspection Council for Electrical Installation Contracting
NICEIC registration not only demonstrates to customers and specifiers our skills and professionalism, it also gives you peace of mind that our products and services are the best in the industry.

Constructionline: Constructionline is the UK’s largest register for pre-qualified contractors and Consultants.
Accreditation means that a contractor no longer need to repeatedly fill in standard pre-qualification forms for every construction tender.

MCS: Microgeneration certification scheme.
The MCS is an internationally recognised quality assurance scheme which demonstrates to customers that a company is committed to meeting rigorous and tested standards. It was designed with input from installer and product representatives. Similar to the Gas Safe Register, the MCS gives companies a mark of competency and demonstrates to customers that contractors can install to the highest quality every time. Installer certification entails assessing the supply, design, installation, set-to-work and commissioning of renewable microgeneration technologies.

REIGA: Renewable Energy Installation Guarantee Agency
The leading companies in the renewable energy products industry came together to form a not-for-profit organisation to set, monitor and maintain high standards for the suppliers and installers who belong to it. It is called REIGA, and its purpose, in addition to vetting companies which want to become members, is to give you a 10 year guarantee on the installation and maintenance of renewable energy products. It won’t cost you as the customer a penny, and is in addition to any guarantee the supplier or installer may offer you.

REA: Renewable Energy Assurance scheme
The REAL Assurance Scheme was set up by the Renewable Energy Association. Their aim is to guarantee a high quality experience for consumers wishing to buy or lease small-scale energy generation systems for their homes. The REAL Assurance Scheme logo is a sign that the company has agreed to abide by the high standards set out in our Consumer Code.

Gas Safe: Gas Safe Register is the official stamp for gas safety in the United Kingdom, Isle of Man and Guernsey.
CORGI registration is no longer valid. To work legally on gas appliances and installations you must be on the Gas Safe Register. The register is there to protect consumers from unsafe gas work. Status as a registered engineer is evidence that you are working legally and you are competent and safe to work with gas.

BBA: British Board of Agrement
The best products can be ruined by a poor installation and the BBA is active in a number of schemes for installers. These run from our BBA Approved Installer Scheme for injected Cavity Wall Insulation to schemes run by Agrément Certificate-holding manufacturers, where BBA inspectors vet the installers to the manufacturers' criteria.
The BBA is proud of its reputation for integrity and its absolute independence and impartiality recognised throughout the construction industry in the UK and beyond.

CIGA: Cavity Insulation Guarantee Agency
The Cavity Insulation Guarantee Agency provides independent 25 year guarantee for Cavity Wall Insulation fitted by registered installers in the UK and Channel islands.
The Cavity Insulation Guarantee Agency was established in consultation with the Government's Energy, Environment and Waste Directorate (a division of DETR) to provide householders with an independent, uniform and dependable guarantee covering defects in materials and workmanship.
CIGA also operates and administers the Cavity Wall Insulation Self Certification scheme (CWISC) in association with the British Board of Agrément. The scheme provides homeowners with the comfort of knowing that work by registered contractors complies with the requirements of the Building regulations.

ISO 9001:
ISO9001 is an internationally-recognised standard for quality management, ensuring that organisations have proven processes in place to meet customer requirements.

Achilles are one of the world’s largest and most trusted providers of supplier information that assists and supports the procurement process. They identify, qualify, evaluate and monitor suppliers on behalf of major organisations worldwide. In doing this, they build and support online communities in many industry sectors, creating unique and powerful global networks.

Green Deal:
Green Deal Installers deliver the energy efficiency improvements for the consumer. DHR specialise in improvements across a range of energy efficiency improvements.

Independent and impartial advice about the Green Deal can be obtained on 0300 123 1234 or at