Is the Heathrow Express operated separately from the London underground system? With all these work stoppages, I'd rather not depend on the tube to get to my hotel.
Also, has anyone had experience regarding any luggage size issues with Heathrow Express? I'll be wheeling a hard-sided 27" suitcase, and if that is going to be problematic for their luggage system, I'd like to know beforehand so I can make other arrangements for transport.
Thanks!