"Tom Barry" wrote

And without Boris trumpeting them as meeting a manifesto commitment, to
boot. If they'd only had aircon...

Among the problems with aircon on the tube lines is - where do you dump the
heat? Presumably on, say, the Central or Piccadilly lines it would be
possible to devise a system whereby the heat was retained on the train until
it got to the open air, and then dumped, but Victoria Line trains stay
underground all the time they are in service. No use cooling the trains if
you just heat the tunnels even more.

Peter