This tail has more of a tale if you will.
Its starts back in December with a little old man and little old woman who live in a house by the sea , they have been there more than 30 years happy and sad.
They decide to buy themselves a new cooker.
They have one of those companies come that will deliver new cooker and take away old cooker. Operatives who do the disconnection of the old, and connection of the new have only basic training.
They do not like the look of old system and refuse to connect new cooker. Saying it is not safe.
Leave aged couple frightened and confused with only limited means of cooking, toaster and kettle.
Electrician summoned. New box fitted without EICR.
Problems ensue. RCD trips.
Old people can't reach it.
Electrician returns, finds earth fault, disconnects.
Time passes, sewage overflows.
Nasty expensive difficult and confusing for Aged couple.
I hope the lesson here for young sparks who may see this thread,
is that if you are called out to an old system that some nob says is dangerous, inspect it test it and document it as well as you can, before you consider anything else.