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A-one+ was demobilised in March of 2022 with the introduction of National Highways new scheme delivery framework. A-one+ was a leading integrated highways service and solutions provider carrying out a range of: routine and planned maintenance, incident and weather response and various engineering projects on a number of motorways and major trunk roads on behalf of National Highways in Yorkshire, Kent and Sussex. The company was a shared three-way joint venture partnership between; Jacobs, Colas and Costain and benefits from facilitating experience, ideas and talent drawn from across the three parent companies.

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The A-one+ annual revenue was $84.2 million in 2026.

156 people are employed at A-one+.

A-one+ is based in Darlington, England.

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