If the failure occurs in a 'controlled area', it's likely points will
need securing by hand ('remote securing' is generally confined to the
tube lines).

Response times are not helped by:

Stations that are unstaffed.
Stations with staff that are medically-restricted from going on the
track.
Stations with staff that are quite competant but whose authorising
licence is out of date.
Stations with staff that simply claim they don't feel competant to
carry out the task (this is apparently acceptable under the Health
n-Safety culture/scam of today).
Stations with staff that want traction current turned off first,
extending the delay and plunging trains into near darkness (this is
mandatory in a few restricted areas, but not at all locations).
Stations with staff unfamiliar with the area - i.e. unable to find
points concerned or who secure the wrong set, or in the wrong
direction.

Apart from that, it's all plain-sailing!