DIYbanter - View Single Post - No earth to light switch, so sinking a plastic surface back box in awall?

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On 20/01/2019 13:09, wrote:
I've discovered that the wiring to a light switch is in 2 core (i.e. no
earth) so the metal back box was unearthed. Getting an earth to it would
be a royal pain so I've removed the metal back box and plan to sink a
surface box so the back of the switch is in an insulated enclosure and
there's no chance of the screws making contact with a live wire if a
wire broke.
What's the opinion of the jury?
Any alternative solutions?

I've just found a better solution to this particular problem. There's a
light switch in the adjacent room, almost exactly behind the switch
that's bothering me, and this has an earth. They are on the same
lighting circuit so an earth wire through the wall and all is well.