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1 million working hours without a reportable accident in Area 12. Well on target for zero AFR

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

Two Full-Width Lane Paving

Waste Segregation Facility


Concrete Barrier Project

Our Latest Tweet

RT @HB_Driven: Great to see so many companies supporting @CIHTUK first Young Professionals conference #CIHTYP @FMConwayltd @Aone_uk @Colas…

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LATEST NEWS / 14.11.2018
CIHT Young Professionals

Considered to be one of the most unmissable events of the year the CIHT Young Professionals Conference is taking place at...

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LATEST NEWS / 14.11.2018
Give Gritters Space

Highways England launched a campaign today at our A-one+ motorway depot in Birdwell, Barnsley, calling for drivers to ‘Give...

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LATEST NEWS / 13.11.2018
Highways UK 2018

Thanks to the organisers at Highways UK for organising yet another fantastic industry event. The 2-day conference and exhibition...

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LATEST NEWS / 29.10.2018
A-one+ Safety Theatre HUK 2018

A-one+ is a proud supporter of Highways UK which is the flagship event for the people and organisations involved in the planning,...

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