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Double winners at CEYH Awards

Introducing integrated highway engineering provider A-one+.
We have the capabilities to design, construct and operate thousands of miles of road networks.
A-one+ works as one team delivering highway excellence.
Discover exactly what we do for your road network by viewing our capabilities and solutions now.

What we do

About Us

A-one+ is a key group of integrated highway engineering providers, having been established by industry leaders Jacobs, Colas and Costain.


You can depend on our capabilities to provide a quality integrated highway service and our solutions to develop pioneering industry innovation.


People are our most important asset. Being un-incorporated means that parent company expertise and support for our employees plays a vital role in our success.

We offer a wide range of services, click the button to find out more

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Our Solutions

Ouse Bridge Safety Mock Up

Cusworth Park and Gardens Preservation

Integrated Area Programme

Innovative Noise and Restraint Barrier

LATEST NEWS / 20.08.2019
Another Coup for Connor

Congratulations once more to Connor Coupland recently announced as Yorkshire and Humber finalist for the National Apprenticeship...

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LATEST NEWS / 15.08.2019

The eagerly awaited shortlist for the Highways Awards 2019 has been announced this week ahead of the ceremony in October and we...

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LATEST NEWS / 22.07.2019
Bridging the Gap

We are working with Highways England to promote engineering and the highway industry to young people in the community where we...

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LATEST NEWS / 12.07.2019
Work Placement Heroes

Our busy Design Office in Darlington has been recognised for the amazing work placements provided to budding student...

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