Originally Posted by
mad_rich
...Paddington is good for T2/3/5 (T4, less so) as long as you don’t mind paying for the Heathrow Express (you should be able to get an advance ticket at a discount). The downside is that you wake up in the morning and discover the trains are broken and you need an expensive cab....
I have had this happen to me and I can assure you that the Heathrow Express staff has no intention or desire to provide any sort of help other than telling you to write for a ticket refund. I made a deal with two other people standing there, also abandoned, and we split the cab. A decent carrier would have prearranged a shared cab bridge and accept tickets to pay for it, of course.