I never said turn off the whole CU. The lights are not on the same circuit as kitchen appliances. Cordless phones come with a warning that they don’t work without power and a corded phone should be kept.Winston please STOP being so short sighted, your obsession with this opinion of yours proves conclusively that you have little experience of real life when things go wrong.
Turn off at the CU, then at night the house is then likely to be in darkness. and the cordless phone is likely to be useless without power.
This recent obsession with a row of isolators above kitchen worktops is simply that, an obsession, and not necessary or done in other parts of the world.