London United sold to its management having been formed out of London Transport's operations, resurrecting a name from tramway days. It started its own low cost unit, now closed, Stanwell Buses, trading as Westlink. London United was later sold to the French company Transdev. Transdev had also acquired Blazefield Holdings and with it the Harrow based Sovereign operation, based on the original operations of BTS of Borehamwood. Transdev renamed the acquisition London Sovereign and ultimately branded both London United and London Sovereign operations simply Transdev. When Transdev merged with Veolia, competition authorities required some divestment. Whilst initially Transdev retained the former BTS unit, it sold London United to fellow French company, RATP, responsible, amongst other things, for the Paris transport system. RATP now own both.