Check live service updates before departing; engineering works can affect Piccadilly or Elizabeth line services

https://www.scribd.com/document/1074904087/Private-Hire-and-Ride-Hailing-to-Heathrow-What-to-Know-Before-You-Book-216958

Check live service updates before departing; engineering works can affect Piccadilly or Elizabeth line services, suggesting buses or coaches as backups.