On 3 Apr, 22:11, MIG wrote:

For some reason the guards don't have the same problem in the 455s.- Hide quoted text -

Yes they do!! They now have to actually get out onto the platform
before putting the release up! So now passengers furiously stab at the
buttons wondering why the doors have not opened straight away like
they used to!! As well as that, the ex-508 TSO carriages need a longer
button press to get the doors open, so a 455/7, a guard doing it how
they want it and the great unwashed all equals....dismay!!