If you’re bringing a bike, verify cycle policies on trains; some lines restrict non-folding bikes

https://www.scribd.com/document/1074894734/Heathrow-Drop-Off-Charges-and-Pick-Up-Locations-Avoid-Fines-and-Hassles-212266

If you’re bringing a bike, verify cycle policies on trains; some lines restrict non-folding bikes, so consider airport buses with luggage racks instead.