Industry Accreditations

Considerate Contractors

The Considerate Constructors Scheme is a not-for-profit, independent organisation founded to raise standards in the construction industry. The aim of the CCS is to raise standards across the construction industry through the monitoring of registered sites, companies and suppliers, and the displaying of posters around the construction site, promoting registration with the Scheme.


Membership service designed to help companies navigate the PQQ process; Silver members having verified their expertise and qualifications to our PAS 91 standard – as developed by the British Standards Institute (BSI).



Launched in 2012, Acclaim Accreditation is the health and safety accreditation service provided by Supplier Assessment Services. They are an independent competent assurance of the H&S systems we have in place.


SSIP is committed to ensure reduction in health and safety assessment costs and bureaucracy in the supply chain, by making cross-recognition between member schemes as effective as possible.

The SSIP Portal is free to access and provides an easy way of finding out if a supplier holds valid certification with an SSIP member scheme and confirms compliance with the SSIP Core Criteria.

System Accreditations

METSEC Installer

N&J Building Services Ltd are experienced installers of Metsec’s Steel Frame System, having installed this system on previous high rise buildings amongst other projects. Our operatives have received training on the installation of Metsec SFS to ensure their familiarity and competence with the correct installation of this system.


Alsecco Accredited Installer

N&J Building Services Ltd. are an accredited installer for the Alsecco’s External Wall Insulation (EWI) systems with our operatives having attended and passed Alsecco courses for their systems. All our installations of Alsecco systems are correctly installed by suitably qualified and competent operatives in compliance their our specifications, BBA certification and installation guidelines. 

We have been working alongside our partners N&J Building Services for over 10 years, our team have carried out numerous schemes with Alsecco from multi storey residential to commercial projects and are fully conversant with all these systems and finishes.

Sika Concrete Repair

Whilst Sika do not offer a traditional approved installer programme, N&J Building Services Ltd. have extensive experience using these products over the last 10 years and in a wide variety of settings. Over the years we have utilised and become familiar with the variety of concrete repair systems offered by this industry leading company.