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TWS holds Constructionline Gold, the UK’s most rigorous independent supplier accreditation. It means you can appoint us with confidence, right from the start.

When you appoint TWS, you get more than a temporary water specialist. You get a fully pre-qualified, independently verified partner who already meets the standards your project demands, so you can focus on the build, not the paperwork.

What is Constructionline?

Constructionline is the UK’s largest pre-qualification database for the construction sector. It was set up by the Government to cut duplication in procurement. Buyers, from councils to major developers, use it to find and appoint verified suppliers with confidence.

Gold is the top tier of membership. To achieve it, a supplier must pass a full independent assessment. This goes well beyond the standard PAS 91 questionnaire. It covers health and safety, the environment, quality, equality and ethics, all verified, not just declared.

4,000+

buying organisations use the Constructionline database

£100bn+

of UK projects published via Constructionline in 2024

PAS 91

Gold exceeds the standard industry pre-qualification benchmark

SSIP

Health & safety approval is built into Gold membership

Verified across every area that matters

Gold is not self-declared. Every area is checked by Constructionline’s own assessment team. That gives you real assurance, not just a tick in a box.

Health & Safety (SSIP)

Our health and safety systems meet the SSIP Core Criteria. This covers policy, training, risk assessment and accident reporting. It is approved by the Health and Safety Executive.

Environmental Management

We have clear environmental policies in place. Our work follows current legislation and best practice. This is verified, not just stated in a document.

Quality Management

Our quality systems are assessed by an independent team. Buyers can trust that the service TWS delivers will be consistent and controlled on every project.

Equal Opportunities & Diversity

We comply with all equality and anti-discrimination law. This has been verified across our business and the supply chains we work with.

Modern Slavery Act Compliance

We are assessed for compliance with the Modern Slavery Act. This shows our commitment to ethical trading at every level of our operation.

Anti-Bribery & Governance

Our anti-bribery and governance policies have been reviewed and approved. Public and private sector clients can rely on us to act with integrity.

What our Gold status means for your project

For procurement teams, project managers and principal contractors, a Gold-accredited supplier saves time and reduces risk. Here is what it means in practice.

No Repeat Pre-Qualification

TWS is already verified against the Common Assessment Standard. Your team does not need to run separate checks. We arrive ready to be appointed and work can start sooner.

Meets Public Sector Requirements

Government bodies, councils, NHS trusts and housing associations often require Gold as a minimum. Appointing TWS ticks that box straight away, no extra steps needed.

Accepted by Major Contractors

Many principal contractors now require Gold from their supply chain. With TWS on your team, you meet those standards from day one.

Real H&S Verification, Not Self-Certified

Our SSIP approval is part of our Gold membership. It is independently assessed. On site, that matters. It protects your people and your project.

Lower Supply Chain Risk

Gold includes checks on governance, ethics and risk management. Your stakeholders can see that TWS has been properly reviewed, not just asked to fill in a form.

An Ongoing Commitment

We do not hold Gold as a one-off badge. It requires active maintenance every year. When you work with TWS, you work with a business that keeps its standards current.

"Gold accreditation reflects the standards we have always held ourselves to. It simply makes those standards clear to the clients, contractors and buyers who need to know."

Temporary Water Solutions Senior Management Team

Frequently Asked Questions

What is Constructionline Gold accreditation?

Constructionline Gold is the top tier of the UK’s leading construction procurement scheme. It goes well beyond the standard PAS 91 pre-qualification questionnaire. Gold members are assessed across six key areas: health and safety (SSIP), environmental management, quality systems, equal opportunities, Modern Slavery Act compliance, and anti-bribery policy. Everything is independently verified, not self-declared.

 

Does TWS hold Constructionline Gold?

Yes. Temporary Water Solutions holds full Constructionline Gold membership. Our accreditation is independently verified by the Constructionline assessment team. We keep it current, it is not a one-time achievement.

 

Why do I need a Constructionline Gold supplier?

Many public sector clients and principal contractors now require Gold as a minimum for supply chain appointments. Using a Gold supplier like TWS removes the need for separate pre-qualification checks. It saves your procurement team time and keeps your project compliant from the start.

 

What is SSIP and is TWS SSIP approved?

SSIP stands for Safety Schemes in Procurement. It is the UK health and safety pre-qualification standard approved by the Health and Safety Executive. Constructionline Gold includes full SSIP Core Criteria verification. TWS is SSIP approved as part of its Gold membership, you do not need to seek a separate SSIP certificate from us.

 

 

What is the difference between Constructionline Standard, Silver and Gold?

Standard covers basic company information. Silver adds verified health and safety. Gold is the top level, it includes everything at Silver, plus independent checks on environmental management, quality systems, equal opportunities, Modern Slavery Act compliance and anti-bribery policy. Gold also satisfies the Common Assessment Standard (CAS), which is widely required by public sector buyers.

 

Can TWS supply water to public sector projects?
Yes. Our Gold status means we already meet the pre-qualification requirements of most government departments, local authorities, NHS trusts and housing associations. There are no extra vetting steps. We are ready to be appointed and get to work.

A verified supplier, ready for your project

Need a Constructionline Gold accredited water supplier? We are ready.
Call us or drop us an email and we will get straight back to you.

Call 0800 001 6041
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