Wow. That is definitely over the top. Nowadays so many people seem to put official policies and health and safety over common sense. I think i will stay clear of riding this transit then.
If you ride the transit out once, and walk back once, you really won't have a problem. On an aviation forum several members say they do that because they prefer the lounge at T5B.
The complications arise when you either do it repeatedly, or you end up back at international arrivals having not travelled from anywhere. Heathrow T5 has automatic conformance on boarding passes, which means if you do anything outside the ordinary (i.e. go through security, spend a fortune in the shopping mall, catch your plane) the system can't cope with it.
BA domestic flights are pretty cheap at the moment, £40 each way from Heathrow to Newcastle or Edinburgh is pretty common, you should have a go at catching a plane somewhere.
Peter Mugridge said:
On the subject of strictness, I seem to recall reading in the newspapers a couple of years or so ago that they have even banned passengers from doing photography from the terminal windows by the gates now...
They weren't that bad when I travelled Emirates from T3 last month, half the lounge were taking photos of the A380. But my wife was waiting for me in the long-stay car park at T5 a couple of months ago, which serves as the free pick-up area, and she was forced by security to catch the bus to the terminal to wait for me there. That is ridiculous, it's not as though nobody knows what an A380 looks like.
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Is that actually permitted? At most airports you can't stay on a transit between the two parts of "airside", and people will check to stop people doing it
I think you can sometimes get away with it, but not always. But yes, I'm also surprised, when I've ridden on similar transit systems at Dubai and at Chek Lap Kok they have fairly robustly ensured everyone gets off the transit.