Book a seat on the Heathrow Express between London Heathrow Airport and Paddington Station using the number 0345 600 1515. You can also use this number to report issues booking a ticket on the Heathrow Express website or App.
The Heathrow Express telephone number 0345 600 1515 can also be used to request a refund or to make a complaint about your trip.
Heathrow Express Email
Customers can also contact Heathrow Express by emailing customer_relations@heathrowexpress.com