Lorne Stewart Group

Lorne Stewart's new energy management, renewables and low-carbon technology solutions business

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Welcome to Lorne Stewart Group, one of the UK's leading independent building services companies. Our group provides a range of specialist skills harnessed through our Mechanical & Electrical Engineering, Facilities Services, Offsite Modular Design & Construction and Energy Management, Renewables and Low-carbon Technology businesses.


We provide our customers with innovative and sustainable building service solutions throughout the construction and operational phases of any building asset.


Our businesses and services

Delivering operational excellence

Lorne Stewart Engineering is a regionalised building services contractor with offices in eight locations across England and Wales.

Enabling our customers to excel

Lorne Stewart Facilities deliver planned mechanical and electrical compliance contracts, reactive works, project completion and soft service integration with cleaning, security, washroom, energy solutions and pest control.

Engineering for tomorrow

Rotary Building Services delivers technically complex building services projects across the UK, as well energy management, renewables and low-carbon technologies through its subsidiary company, R-NG Energy.


Leading in construction offsite innovation

Lorne Stewart’s Offsite facility design and manufacture a complete range of mechanical and electrical offsite prefabricated solutions for the construction and allied trades. The products and services offered support improving efficiencies through innovation in UK construction industry.

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