This Selkirk-based business has more than 285,000 customers, and specialises in supplying energy to people moving house. It says clear pricing and good customer service helped sales grow 56% to £232.7m. In May, it was reported that private equity firm Limerston Capital — which acquired a majority stake in 2016 as part of a buyout led by chief executive Chris Gauld, 40 — is set to exit the business in a £100m deal.

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Company details
Year2018
Rank110
CompanySpark Energy
ActivityEnergy supplier
LocationSelkirk
Sales £m*232.7
Operating profit £m*10.0
Main shareholdersLimerston Capital (56%), Railways Pension Investments (42%), management (2%)
Staff450
Founded2006
Websitewww.sparkenergy.co.uk

If applicable:

* supplied by Company   † annualised figure   ‡  profit = ebitda