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. When Beeline passed to FirstGroup, the Railair service was operated ultimately by First Berkshire, which in 2003 relaunched the service with Irizar Century bodied Scania K114IB coaches. The serviced operates as the FirstGroup branded service Rail Air.com.