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Five decades of combined engineering expertise

In 2018, Bilfinger UK was formed via a merger of two of its core UK businesses: Runcorn based Bilfinger Industrial Services and Newton-le-Willows based Bilfinger Industrial Automation Services, resulting in a new business named Bilfinger UK, which created a turnover of over £180 million that consisted of over 2,500 employees across ten UK regional offices.

  • Bilfinger Industrial Services was one of the UK's leading providers of integrated technical services for the process industry, delivering design, construction and maintenance services.
  • Bilfinger Industrial Automation Services focused on increasing the efficiency of assets through automated systems and control solutions.


In 2022, Bilfinger Salamis merged with Bilfinger UK to trade under the Bilfinger UK brand, creating one of the UK’s largest tier one contractors with a turnover of €400m, now consisting of 5,000 employees during peak periods and 14 onshore locations across key industrial hubs.

  • Bilfinger Salamis UK was an established provider of maintenance, modifications and operations services to the oil and gas, energy, petrochemical, renewables, nuclear and utilities markets covering onshore and offshore facilities across Europe. 

The merger combined the onshore and offshore capabilities of the two businesses and positioned the company as a key contractor for delivering large renewable energy projects as the UK transitions to net-zero. 

[Translate to English:] Bilfinger History
[Translate to English:] Bilfinger UK site

Our Journey to Success


O'Hare was formed and later renamed to O’Hare Engineering Limited


Concol Systems Limited was formed and later renamed HG Group


Bilfinger had joint ventures with SGB/Salamis (SSL) and APG/Salamis


AT Controls was formed and later renamed to ATG

Bilfinger acquired Maersk


O'Hare Engineering and Salamis were acquired by Bilfinger Berger and renamed BIS O'Hare


BIS O'Hare merged with our sister company BIS Salamis (onshoreto form BIS Industrial Services Limited


ATG were acquired by the Bilfinger Industrial Services Group and renamed BIS AT


HG Group were acquired by the Bilfinger Industrial Services Group


BIS Industrial Services Limited changed its name to Bilfinger Industrial Services UK Limited

BIS ATG and the HG Group were merged to become Bilfinger Industrial Automation Services Limited


Bilfinger Industrial Services UK Limited & Bilfinger Industrial Automation Services Limited merged to become Bilfinger UK Limited


Bilfinger Salamis UK Limited merged with Bilfinger UK Limited to trade under the Bilfinger UK brand

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