Screwless sockets and switches not flush to the wall

[autumnorinoco]

I've just had my house plastered and got the old sockets replaced with screwless sockets by an electrician. At worst some of them have revealed a lot of messy plastering that will need to be filled in and at best they have a gap around them and are not flush with the wall.
I can't tell if they are just smaller than what was there before or if the fitting is not quite right. Any advice on whether it can be fixed with filler or if replacement sockets and switches are needed would be much appreciated.

Thank you

 

[EFLImpudence]

The walls have to be flawless for screwless sockets to fit properly - clearly they are not .

 

[RandomGrinch]

Are the screws too long?

 

[Murdochcat]

I tend to recommend people avoid this type of accessories for the very reasons you can see on these photos.

The back boxes typically need to be 35mm and the plastering needs to be first class

 

[flameport]

Looks like someone plastered around the existing sockets, and those sockets were then changed to new ones.

 

[ebee]

Yup.

I would suggest putting proper sockets in with proper screws that show