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Project of the Year (£30m-£50m): Winner


Costain – Dimlington Terminal Modifications

The race was on to deliver this highly complex and technical project with as little disruption as possible – but Costain tackled it head-on.

Client Perenco had to make urgent upgrades to its Dimlington gas plant on Humberside before new environmental legislation came into force on 1 January 2015.

The gases used in the Dimlington plant’s refrigeration system were damaging to the ozone layer and the client had 18 months to get the job done.

Perenco is the world’s largest privately owned oil and gas company and currently produces around 375,000 barrels of oil equivalent per day.

At the time, this project was Perenco’s largest capital investment in its UK assets, after it acquired BP’s Southern North Sea assets in November 2012.

Costain worked closely with the client to identify a preferred delivery option that would cause as little disruption as possible.

The contractor suggested using the existing plant and equipment, with modifications, to meet the environmental legislation deadline while minimising plant downtime.

“Costain was willing to work with the client and offer a solution that saved millions of pounds”

Judges comments

Through a phased-delivery approach, Costain was able to make the upgrades without shutting the plant down. This reduced the total cost of the project by 60 per cent compared with previous estimates.

The judges were blown away by the cost savings, which they felt would not have been possible without Costain’s innovative approach.

“The contractor was willing to work with the client and offer a solution that saved it millions of pounds,” one judge remarked.

“This is a great example of a contractor relishing a challenge and coming up with a solution in partnership with the client – utterly fantastic.”

Dealing with a live site presented Costain with all of the risks associated with working on an operational and highly hazardous gas processing facility. But it stepped up and delivered the scheme without any accidents.

The judges were hugely impressed with how Costain managed to work with an “intricate and incredibly complex scheme”. It was also clear to see that the team was passionate and proud of the work it had carried out on Humberside.

Client feedback highlighted that not only has this project extended the operational life of the plant, but it has improved the facility’s flexibility while enhancing opportunities to process additional offshore gas reserves.

Highly commended: Carillion Building – Consett Academy & Leisure Centre

This scheme really tugged at the heartstrings of every judge in the room: a project that delivered enormous benefits for the local community in the face of major funding challenges and local opposition.

Carillion was tasked with delivering this £44m regeneration in County Durham, which included the construction of a new academy and leisure centre.

The scheme faced several challenges, with the academy element attracting major opposition from residents. The project was then dealt further blows after the academy’s main sponsor, Durham University, pulled out.

Despite this, Carillion delivered a fantastic scheme that the community truly loves. “Carillion was obviously at the centre of this project keeping everything together, which was amazing to see,” the judges said. “This was no small feat.”


  • Kier Construction – Cheltenham Racecourse redevelopment
  • Laing O’Rourke Construction – Manchester City FC Etihad Stadium South Stand expansion
  • Mace – 12-14 New Fetter Lane
  • McAleer & Rushe – Terrace Mount, Bournemouth
  • Network Rail / Morgan Sindall / Arcadis – Manchester Victoria station redevelopment
  • Sir Robert McAlpine – Annan House

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