Robin May wrote:
"J. Public" wrote the following in:


Also, what's the problem with opening both sets of doors at
stations like Uxbridge, Golders Green etc., where there are
platforms on both side of the train.

I'm not sure. They certainly open both sets of doors on the eastbound
District line platform at Barking.

Yes. That's to allow cross platform interchange to and from both the Gospel
Oak Line, on the left, and Shoeburyness trains on the right.

Lawrence Myers