The first public bus service in Slough ran on 1st March 1904. It was operated by Great Western Railways and the service offered two routes: one via Salt Hill and Farnham Royal to Beaconsfield (fare 1/-, or 5p in todays money), the other via Stoke Poges to Hedgerley, with a single trip daily extending to Beaconsfield.

The buses were hugely successful and within a few months a route between Slough and Windsor was introduced. The local newspaper of the time wrote:

"The motor-car service between Slough and Beaconsfield…is proving a great success. The cars are always crowded both ways, and they are proving a real boon to the district…the route being taken through charming scenery, and presenting at this time of year the most delightful prospects of natural beauty. The Great Western Company have every reason to plume themselves on the success of their experiment." (By a writer in the South Bucks Free Press, quoted in the Slough, Eton and Windsor Observer, 7 May 1904)