I can see plenty wrong in that picture, some reasonably serious some not. Wouldn't take long for a decent spark to work out what needs doing.
What are the serious problems, just out of interest?
I got some better pics of things today, anyone got any idea how old the cutout could be? SP Energy just said "very old".
Here is some of the wiring throughout the house. I've been under a few of the floorboards and up in the loft and it all looks in good condition and well routed like below. I'm guessing it was all rewired when the extension was done about 20 years or so ago.