Stayed at Hilton T4 overnight and now heading towards T5 for my flight. I usually get the underground to T5 from T4 but the signs for transfers all seem to push you to the Elizabeth Line and Heathrow Express so I am having a go as I am in no rush. Bad move? I just missed a train to T2 &T3 and the next one is in 15 minutes. I suspect when I get to T2 &T3 I will have a reasonable wait for my train to T5. Elizabeth Line and Heathrow Express are easier if you are carrying luggage but is the underground not the choice if speed is the essence?