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Celebrating a landmark five million hours reportable incident free in Area 12

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

A64 Carriageway Renewal Team

Ouse Bridge Safety Mock Up

Cusworth Park and Gardens Preservation

Integrated Area Programme

LATEST NEWS / 22.10.2020

Winners of the 2020 Construction Excellence in Yorkshire and Humber Awards have been announced at a special virtual ceremony...

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LATEST NEWS / 08.10.2020
Digital Innovators

We’ve been working hard in the background developing our technology systems to improve our asset knowledge and efficiency. That...

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LATEST NEWS / 26.08.2020

We’ve received some fantastic nominations for our quarterly recognition scheme The GRITS in Area 12.  These awards are about...

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LATEST NEWS / 21.08.2020
A Hidden Danger

Safety is one of our five key values as well as Highways England’s first imperative. We have our Wellbeing, Improvement,...

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