I would echo others reviewers comments. There app caused an error in one of my bookings and contained the wrong direction of travel. They refused to alter the booking even though the price is the same. "Customer Service centre" rude and indifferent. Heathrow express is more expensive per mile than Concorde was, which shows what a rip off it is. TFL now runs a half hourly service to Paddington which cost £9 one way. Obviously the option to use while you wait for the new Queen Elizabeth Line to open. Hopefully by then Heathrow express will have ceased trading.
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