About Group company Adler and Allan

OHES is part of the Adler and Allan group of companies. This means that OHES’s customers benefit from an even broader range of solutions through our environmental network of companies.

Adler and Allan provide environmental services across utilities, energy, and industrial infrastructure to reduce risk to the environment, people, and organisations, and prepare for a Net-Zero future.

Their national network of consultants, engineers and specialists makes Adler and Allan the first-choice environmental partner to expertly manage assets through the full life-cycle, including design, installation, preventive maintenance, transition or decommission.

Our clients report that the full, end-to-end service the Group’s unparalleled range of abilities, creates economies and efficiencies because they spend less time briefing and managing a range of untried suppliers.

With more than 100 products and services ready to deploy at a moment’s notice for leading players in 50+ industries, find out more about what the Adler and Allan Group can do for you.