RailAir

[6] After bus deregulation, the existing Reading and Woking to Heathrow Railair services passed to private companies.

Privatised Alder Valley, as the Bee Line bus company, owned by Q-Drive, operated the Heathrow to Reading Railair service in bottle green liveried coaches as the Rail Air service with marketing for the onward rail links to South Wales and the West of England.

From 1 June 2008, the Virgin service to Heathrow was withdrawn, with passengers directed to Green Line route 724 as a replacement.

In July 2019 First Berkshire & The Thames Valley commenced operating route RA2 from Heathrow Airport to Guildford station.

[16] From 23 July 2023, First Berkshire & The Thames Valley commenced operating route RA3 from Heathrow Airport to Watford Junction Railway Station