Car rental technology provider CarTrawler has sold a majority stake to BC Partners, owner of the Phones4U retail chain, for an undisclosed fee.
A minority stake in the company has also been snapped up by Insight Ventures Partners and the management team will hang on to a "significant shareholding".
UK broadcaster Sky has pegged the deal to value the company in the region of £300 million. Competition authorities will have to give their approval to the sale before it can be closed, CarTrawler says in a statement.
BC Partners says the investment will be used to help CarTrawler expand further internationally, as well as building on its technology services to car rental partners, intermediaries and other suppliers (such as airlines).
The sale to BC Partners comes just over three years from an earlier investment round from UK-based private equity house, ECI Partners.
That round in February 2011 triggered and major shuffling of the management team, with CEO Greg Turley moving aside to a non-executive directorship and chief operations officer Mike McGearty taking over the top job.
The company says it now has some 1,000 partners using its system and works with more than 1,200 car rental suppliers in 30,000 locations around the world.
It bought the online assets of Lastminute.com's HolidayAutos consumer brand in June 2013.
NB:Car rental image via Shutterstock.