I know what you mean!...my elderly neigbour wanted a shower wiring (too old to get in and out of bath) he was 97! He got a grant from some scheme or other, he didn't even have to pay for it. We were good neighbours, no problems he liked us!...untill I priced for shower. Old porcelein fuses, all earths twisted and in a screwit connector above the plywood fuse board.
Err, I cant' wire a shower into that, you need a new board, in fact you need a complete rewire, the wiring is dodgy.
Accepting the fact he was real old and realising the disruption involved in a complete rewire, I said I could do the shower alone and quoted for a new board dedicated to the shower only.
The price was ÂŁ75.00, he had to pay 50% of the cost (this was 10 years ago) he never spoke to me or my wife again, he told other neighbours I was a con man and was exploiting the grant scheme. He eventually got a full grant for other works 2 years later, ch, new roof, kitchen, rewire etc. The rewire cost was ÂŁ2800...not bad even today for a 2-bed semi. He died 1-week before his 100-th birthday, we had been neighbours 20-years on good terms, I did a few garden type jobs over the years for him for free...but electrics I'm a con man
btw it was an rcd 1-way, even before mandority