Curious fault after recent move

[Stuart27]

Again, if I were you I would be looking to determine exactly what circuits are in use and check everything out. Did you get an EICR as part of the documents for your new home?

No we didn't, the previous owner had the property around 8 years and stated in the documents no electrical work had been carried out during their time there.

By the look of the shower isolator in the landing cupboard it was installed as a DIY job

 

[brianmoooore]

By the look of the shower isolator in the landing cupboard it was installed as a DIY job

Could be that he just forgot to bring the large T&E cable clips that day.
At least you have a decent quality isolator that's up to the job, rather than one of those totally inadequate pull cord efforts.

 

[UNG]

Could be that he just forgot to bring the large T&E cable clips that day.

Or a piece of trunking that would have also covered the large hole in the back box