Top Track 250

Founded in 1989 by Alan Ryder, 59, to help customers assess the impact on the environment of their activities, RSK also offers engineering and technical services to companies working in the energy, infrastructure, property and manufacturing sectors. In July, the Cheshire-based firm bought engineering company RoC Consulting — its sixth acquisition of the year and its 36th since 2016. During the pandemic the group has offered a Covid-19 decontamination service, which disinfects workplaces and also applies protective barriers to help prevent infection.

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Company details
ActivityEnvironmental consultancy
Sales £m212.7†
Operating profit £m5.9†
Main shareholdersManagement, including Alan Ryder (93%), BGF (7%)

If applicable:

* supplied by company   † annualised figure   ‡  profit = ebitda