Broadening this topic out.... how would we all cope with a major power disruption? Obviously we'd have bigger issues than TV and radio but in terms of getting information how would we cope with knowing what was happening. I don't mean the broadcasters but us at our homes.
It is a very unlikely scenario but it has happened elsewhere - this past winter in Texas is a good example - although our electricity infrastructure in the UK doesn't have the many flaws that were shown up in their grid then. But who knows what could happen for whatever combination of events.
Imagine this scenario - all or large parts of the country are without power, including your town/city. and it's going to be out for a few days, hopefully!
So immediately you've no Internet - your phone exchange is probably working but your modem isn't. Your only phone is DECT and so requires power (
the regs used to say you must have a non powered phone for this reason) Your nearest mobile phone mast has no power, but anyway your phone battery doesn't last a day.
There might still be a TV signal depending on where you live (if you're served by a relay then that's not got backup power) and there'll still be a satellite signal but your TV is mains powered.
One thing you will probably have is radio. There are very few stand-alone radio stations around these days - your local Badger FM has long been fed from a computer in London but it might still be working. Those local ones that are left might have backup power at studio and TX site, although I imagine no community stations will.
However the BBC are obliged to stay on air whatever happens so should be on air in some form.
So that could be your only source of information and you'd listen using your battery powered FM radio that you keep with the stash of batteries in the cupboard under the stairs. You do have that don't you?