Ah, sorry.
The only thing I can think of is to rewire the cable, to the washer/drier, at the grid switch so that it is connected to the circuit itself - if suitable (and no longer through the grid switch as it likely will not suitable for switching both appliances).
Then replace the washer/drier socket with an FCU and extend the cable to another FCU or socket for the dishwasher.
The only thing I can think of is to rewire the cable, to the washer/drier, at the grid switch so that it is connected to the circuit itself - if suitable (and no longer through the grid switch as it likely will not suitable for switching both appliances).
Then replace the washer/drier socket with an FCU and extend the cable to another FCU or socket for the dishwasher.