International Mechanical, Electrical & Instrumentation Services Company


Live projects


Employees in 7 offices


Apprentices in training

Featured projects

LSE, CBR Building, London

Dornan successfully delivered the complete mechanical and electrical services for the Centre Building Redevelopment for the London School...

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BMS, Dublin

This was a greenfield project requiring the modification and extension of a facility to construct a state of...

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AstraZeneca Biologics, Sweden

In Södertälje, AstraZeneca has one of the largest production sites for medicines in the world.  This project started...

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Investing in engineers of the future

Every year, we recruit a large cohort of prospective engineers and give them real-project experience while they study for their qualifications at college. We give them all the support they need to build a valuable set of skills and identify an engineering specialism in which they can see themselves building long-term careers. And they earn while they learn.

Our investment in these young people is significant, but so is our return. The Dornan engineers they become are among the best in the industry.

Dornan news

Dornan Appoints New Group Managing Director

Brian Acheson, Dornan Group CEO (left), is delighted to announce the appointment of Micheál O' Connor as Managing Director of Dornan Group from June 1st, 2021. Micheál (centre), who has been with Dornan... read full story » More News »