Founded in 1989 by Alan Ryder, 54, this consultancy helps its customers assess the environmental impact of their activities. It offers remediation, testing and ground engineering services for sectors including oil and gas, nuclear and renewable energy. RSK has offices in countries such as Romania, Qatar and Algeria, and has expanded into Iraq. International sales reached £33.6m in 2015.

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Company details
Year2016
Rank42
CompanyRSK
ActivityEnvironmental consultancy
LocationCheshire
2-yr av intl sales growth pa63.74%
International sales £000s33,616
Total sales £000s90,367
Staff1,015
Founded1989
Websitewww.rsk.co.uk

If applicable:

* Supplied by company † Annualised figure