The Go Ahead Group acquired the operations of Metrobus on 3rd September 1999.

Following the decision by Arriva to discontinue its operations in Crawley and most of Surrey, Metrobus purchased Arriva's premises in Crawley to develop a commercial bus network in the town. This led to Metrobus moving its headquarters to Crawley. In addition, Metrobus secured the tender to operate local buses in the Redhill and Reigate areas. Metrobus is the operator of the Fastway guided bus network in Gatwick and Crawley which opened in September 2003, and which expanded northwards when Route 100 (Maidenbower-Redhill) was added to the Fastway network in early 2008. In December 2007, Metrobus took over the operations of First Centrewest in Orpington, including the fleet of 35 buses. Metrobus currently operates from three garages at Crawley, Croydon and Orpington. On 3rd October 2009, Metrobus took over the operations of Arriva's Horsham Buses in West Sussex.