This company provides call centres for companies including Sainsbury’s, Axa Assistance and Telefonica. The private equity firm Horizon Capital invested £50m for a majority stake in 2016, and Sabio — the Spanish word for wise — has since made six acquisitions, including the Spanish business Callware last year. Chief executive Jonathan Gale, 50, heads the London-based group, which has offices on three continents and customers in more than 50 countries. International sales hit £30m in 2018.