I've just noticed that the little red light on the cooker wall switch is
flickering. I'm sure it didn't used to do this. The switch itself is only
about 2 year old (although prior to today, I don't think it's ever been
switched off!).

Is is a sign of something bad, or is it simply (as I hope), that the light
in the switch itself has had enough? Should I just change the switch (maybe
for one without a light if it's going to be on 24/7?).

TIA,
A.