Kier enjoys working with a diverse range of subcontractors of varying sizes. We have built up a comprehensive list of high performing supply chain partners which we value and continue to work with.

For companies wanting to work with us, we instil the same high standards which we have developed with our established supply chain.

We have collaborated with the three largest accreditation companies in the UK so if you hold one of the following accreditations, you will be eligible to tender with us. From July 2019 Kier also recognise the Common Assessment Standard,  an industry leading approach reducing the bureaucracy for all and providing flexibility to our subcontractors. Kier will also undertake the expected checks, audits and risk profiles prior to any works being considered.

(If you are a small company employing less than 5 people, turning over less than £250,000, that does not subcontract work and are undertaking low risk operations, please contact your local project for opportunities to work with us. We will be happy to assist and holding an approved accreditation scheme may not be required in this instance).

Kier approved sub-contractor Accreditation Standards.

All 3 schemes recognise the Safety Schemes In Procurement (SSIP) common assessment.

Click here to see a matrix of the approved Accreditation Standards. More detailed information of these is below. >

Kier now also recognise the Common Assessment Standard

If a sub-contractor holds a Common Assessment Standard our requirement is the Common Assessment Standard (Desktop). However, if a sub-contractor holds higher level Common Assessment Standard (Site Based) this will also be deemed to meet Kier standard. 

For more information on the Common Assessment Standard, click here >


CHAS set industry bench​marks, provide assurance and reassurance, and offer best-in-class service​​s. 

Current Kier accepted - CHAS Premium Plus

Common Assessment Standard (Desktop) - CHAS Premier (CAS)

Common Assessment Standard (Site Based) - CHAS Premier Assured (CAS)

Tel: 020 8545 3838
On Registration please enter Kier code: Kier01


Constructionline is the UK’s largest register of contractors, consultants and material suppliers for the construction industry.

Current Kier accepted - ConstructionLine Gold

Common Assessment Standard (Desktop) - Constructionline Gold (CAS) 

Common Assessment Standard (Site Based) - Constructionline Platinum (CAS)

Tel: 0844 892 0312
On Registration please enter Kier code: 1UEZFW

Building Confidence (Achilles)

Through Building Confidence, suppliers can showcase their abilities and demonstrate improved compliance and credibility to a huge buying market – saving time and money in the process. 

Current Kier accepted - Achilles Building Confidence Advanced + Desktop Audit 

Common Assessment Standard (Desktop) - Achilles Member- Building Confidence 

Common Assessment Standard (Site Based) - Achilles Gold B1

Telephone: 01235 820813

Material Suppliers, Labour Agencies and Plant Companies

Please follow the link below to register your interest in working with Kier.

Once registered no further action is required as one of our team will contact you should your details match any future requirements.

If you are identified as a potential supplier, you will be required to complete a PAS 91 aligned questionnaire, such as that in Construction line, and demonstrate Health & Safety competencies appropriate to the services being provided before you can work with us.

Best practice & collaboration

Successful collaboration is at the very heart of our business.

Find out more >


How to get in touch