Bathroom extractor fan what to do poor job

[Antiquechic]

Solid brick wall c1920s.

 

[Taylortwocities]

That finish isn’t acceptable , you can see daylight and there’s an exposed cable clip. First port of call is the main contractor who organised the trades; they should sort the snag. If they won’t, a NICEIC electrician can fit a back‑box extension, trim the spigot or fit a larger grille, then silicone round the edge and tidy the plaster. Don’t touch the wiring yourself , isolate the circuit and get a qualified spark to make it safe. If you’re in Sheffield and want someone reliable to take a look, Pryor Bathrooms do full installs and managed fitting from their Swallownest showroom.https://www.pryorbathrooms.co.uk/

Hope that isn’t an advert, Mr Luke?
But thanks for pointing out all the things that have previously been noted.