How do you fix this?

[says-les]

During an inspection it was observed that twin flush sockets were installed on a finished engineering brick wall.
The installer had simply left a half brick space for each socket resulting in no proper landing for the over-sized space.
How would you remedy this?

 

[Phoenix]

Stick the boxes in with morter, also press some rawl plugs into it after plaicng the box and then you can screw into them at second fix. Might also be able to get a fixing at angle into adjacnt bricks