||New route from Hayes to Heathrow Terminal 5, via West Drayton replacing route H50.
||New route from Hounslow to Heathrow Terminal 5 via Hatton Cross and Heathrow North replacing route H23.
||Withdrawn, replaced by route 482.
||New route from Southall to Heathrow Terminal 5 replacing route 435.
||Extended from Hatton Cross to Heathrow Terminal 5.
||Withdrawn. Replaced by routes 423 (Hounslow - Hatton Cross) and 482 (Hatton Cross - Cargo Village)
||Extended from West Drayton to Heathrow Terminal 5 and renumbered 350.
||Extended from Heathrow Central to Heathrow Terminal 5.
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