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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

Lean Pavement Scheme

Energy efficient lighting improvement

Footbridge Renewal

Team Building

Our Latest Tweet

Shout out to our very own fantastic Thomas Coleman representing Yorkshire & Humber, well done to all!

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LATEST NEWS / 17.08.2017
Environmental Event

Next month we are looking forward to hosting an event in partnership with Institute of Environmental Management and Assessment...

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LATEST NEWS / 16.08.2017
Mental Health Matters

Our team of Mental Health First Aiders have undergone intensive training and are ready to listen. What is Mental Health First...

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LATEST NEWS / 09.08.2017
Inclusion Finalists

The shortlist for the 2017 Construction Investing in Talent Awards has been announced this week and we are delighted to confirm...

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LATEST NEWS / 06.08.2017
Hanging Hard Hats

The recent introduction of the ground breaking industry first A-one+ safety helmets to our staff has left us with an excess...

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