Originally Posted by
milepig
Would the bus or the Heathrow Connect be better. This is the #555 bus, right?
I'll be coming out of immigration at T1, and so the route would be either:
T1 immigration > bus stop at T1 > bus stop at T4 > T4 Underground
or
T1 immigration > T1/3 Underground station > HC to T4 Underground station
There's now a dedicated "Heathrow Express" shuttle train that goes back and forth between T4 and T1&3 every 15 minutes, instead of the Heathrow Connect, so service is more frequent and reliable.
This shuttle should always be quicker (and more frequent) than the bus.