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Delighted to be shortlisted for 3 Highways 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 CH2M, 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

Concrete Barrier Project

6,000 Tonnes in a Weekend!

M1 Rolling Crown

Lean Pavement Scheme

Our Latest Tweet

Our Area 4 team are looking resplendent in preparation for the #RoyalWedding tomorrow with a red, white and blue th…

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LATEST NEWS / 30.04.2018
GRIT Awards

The annual A-one+ GRIT Awards took place last week on April 18 at the AMEX Stadium, Brighton. This prestigious ceremony...

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LATEST NEWS / 28.03.2018
Committed Constructors

Winners of the  Committed to Construction in Humberside and West Yorkshire 2018 awards were announced last week with A-one+...

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LATEST NEWS / 21.03.2018
Supplier Recognition Scheme

Highways England Supplier Recognition Scheme Awards were held yesterday in Manchester. A-one+ is delighted that our Ultigrip...

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LATEST NEWS / 13.03.2018
Mentor of the Year

Delighted to announce our success following the Generation 4 Change (G4C) Awards Yorkshire and Humber. Collins Karanya, one of...

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