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Costain demands the same high standards and values from its supply chain as it does from its own organisation.
Our trade contractors, material suppliers and service providers are integral to our success and customer satisfaction in delivering complex projects and schemes that meet national needs.
Find out about working with Costain
To be paid promptly to terms, suppliers should be aware of the Costain payments process.
More about Costain's payment process
We want to work with responsible suppliers who are capable of delivering our business needs.
More about becoming a Costain supplier