The UK’s largest register for pre-qualified contractors and consultants.


Contractors Health and Safety Scheme (CHAS) is established as the market leader for health and safety pre-qualification in the UK.


TrustMark is the Government Endorsed Quality Scheme that covers work a consumer chooses to have carried out in or around their home.


PAS 2030 (publicly available specification) is a British Standards Institute (BSI) standard which sets out the requirements for installing, commissioning and handover of Energy Efficiency Measures (EEM’s) in domestic retrofit projects.

Stone Federation

The official trade association for the natural stone industry. The Federation co-ordinates all aspects of the industry and provides with a first point of contact for information, advice and guidance in sourcing appropriate materials and service.


Stonework restoration and conservation consultants, offering products and advice for sensitive stonework restoration and conservation.

DOFF System Rosette

Stonehealth approved contractor – DOFF System.

TORC System Rosette

Stonehealth approved contractor – TORC System.

ISO 9001

ISO 9001 is the international Quality Management standard. 

ISO 14001

ISO 14001 is the international Environmental Management standard.


The market leader in the design and manufacture of specialist helical wall ties, fixings and masonry repair systems.


The UK’s fastest Health and Safety assessment Scheme.

Concrete Repair Association

Formed in 1989, the CRA is committed to promoting and developing the practice of concrete repair and allied disciplines, as well as advancing education, technical training and health & safety matters in this specialist construction sector.

National Churches Trust

The Professional Trades Directory supports the diverse network of companies who work with historic buildings.

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