Our Company


Our accreditations demonstrate the actual and measurable credability and integrity of Longley and the level of standards, professionalism that are expected from our team along with the core business values of quality, transparency, safety and customer service.

2000 +
Implemented projects
3500 +
Conferences attended
4000 +
Satisfied customers
ISO 9001, 14001, 45001

The ISO of accreditations are the family of the world's best-known quality management standard for companies and organisations of all sizes. The goal of ISO certification is to develop, maintain and place quality management system guidelines at the center of our business. The results of the accreditation demonstrate our increased productivity, reduced unnecessary costs and guarantee the quality of processes and services  Longley provides.


CHAS understands that the UK compliance market is complex. For over 20 years they’ve worked tirelessly to make the accreditation process easy to use, eliminating unnecessary duplication and simplifying checks and have developed a standardised accreditation for the construction industry.


Acclaim Accreditation is a Health and Safety accreditation. It requires an  assessment of Longley's Health and Safety procedures, documentation, work activities and is assesstedbased on the competent assurance of the systems we have in place.

Safe Contractor

The UK’s leading Health and Safety accreditation scheme verifying compliance. Enhancing RGW’s profile and gives clients the peace of mind that RGW’s Health and Safety practices are compliant with the law.

Safe PQQ

An extension of the SafeContractor Health and Safety contractor management system, that provides organisations with greater visibility of their supply chain compliance. It is an online product built to include the common question sets defined within PAS91.

Constructionline Gold

Constructionline Gold demonstrates that Longley has been subjected to increased scrutiny around governance and risk management and allows us to provides our existing customers and potential new customers with the assurance that Longley are compliant with legislation and industry standards.

Our work

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