Shower isolation switch in bedroom

[Jupiter01]

I am planning to gut out and re-do a bathroom. This has an electric shower and the isolation valve and isolation switch for this shower are in the adjoining bedroom. I am unsure on when this was done and if this was acceptable at the time (assuming it isn’t now). I’d appreciate your view on this please.
I could relocate this but it’s likely to a pain and will involve a junction box above the ceiling or in the wall which isn’t ideal...

 

[EFLImpudence]

Yes, it's fine.

The switch is not actually required by the regulations so it does not matter where it is (within reason).

 

[conny]

Many homes have the isolation switch outside the shower/bathroom and are positioned in the hall outside the door.