Quality Is Accuracy Integrity Diligence Our Business

With over 30 years as the UK’s leading provider, our proprietary technology brings these crucial roles to the cutting edge:

A demonstration of the QualiTech system, used exlusively by our Clerk of Works and NEC Supervisors







What We Do

Clerk of Works

Building/Civils & MEP

Our Clerk of Works service offers meticulous supervision of construction projects, ensuring work aligns with design plans and industry standards. This includes site inspections with defects, progress against programme, photos, test witnessing and more.

NEC Supervisor

Building/Civils & MEP

Having an NEC Supervisor helps to ensure compliance with NEC contracts, and monitoring works’ quality, safety, and timeliness. We provide regular site inspections, identify issues swiftly, and maintain transparent communication throughout the construction process. Emphasis is placed on the collaborative approach.


Building/Civils & MEP

We are able to adapt our service offerings to accommodate particular projects or frameworks. This means clients can benefit from the newer NEC style methods, with a traditional Clerk of Works approach if they wish.

800 +
£ 4 b+
Project Value
COW & NEC Supervisors

How We Do It

Utilising our proprietary QualiTech system, we have streamlined the processes involved with site inspections so that our staff spend 40% less time on admin than before. With the UK’s first self-learning database of over 900 common defects, test witnessing protocols and snags – QualiTech augments the already impressive field knowledge of our inspectors extensively.

Why WSI?

Client Dashboard

An easily accessible dashboard where all report recipients can access reports, NCR's, snags and the live defect tracker.
The WSI White Labelling service, which is popular within our NEC Supervisor service.

White Labelling

The ability to rebrand reports, NCR's, the Client Dashboard and even the email notifications with your company and logo, so that WSI becomes an extension of your brand.
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Our proprietary self-learning database of over 900 common defects, test witnessing protocols and checks, exclusively available to WSI staff via QualiTech. This is our unparalleled edge.
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