Originally Posted by
Non-NonRev
This is incorrect.
ALL Heathrow Express trains continue on to T5 after stopping at Heathrow Central (T2/T3). Travel time is 15 minutes from Paddington to Heathrow Central, if going on to T5, an additional 6 minutes after the train leaves Heathrow Central.
Yes, but the Connect doesn't, and that's the earliest train which gets in to T1/2/3 15 minutes before the Express. That leaves the choice of waiting for the Express or making a run for the Tube or a bus. There's probably not much in it, but my inclination would be that the Tube/Bus might be a few minutes quicker - but it's a risky one.
The first Express arrives at T5 at 5.32am, the first flight out is at around 6.20am, and there's a 35 minute conformance. That's awfully tight and there's absolutely no margin for anything to go wrong.