Tech innovations from this online travel retailer, led by chief executive Clare Gilmartin, 43, include BusyBot, an app feature that crowdsources data to predict where users are most likely to find an empty seat on their train, and a tool that predicts how long customers have to buy a ticket at a cheapest available price. Customers booked tickets, worth £2.7bn, to destinations in 44 countries last year. Private equity owners KKR acquired the business, which is included here on reported profits before depreciation and amortisation, in a deal thought to be worth £450m in 2015.

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Company details
Year2018
Rank200
CompanyTrainline
ActivityOnline travel retailer
LocationCentral London
Sales £m152.8
Operating profit £m‡31.0
Main shareholdersKKR (>50%), management (<50%)
Staff450
Founded1997
Websitewww.thetrainline.com

If applicable:

* supplied by Company   † annualised figure   ‡  profit = ebitda