Convert 2 gang no neutral light switch into 1 gang to power a smart-switch that requires neutral. Possible? UK
In the absence of any other answers I'll put what I'm thinking currently. Please tell me in the comments why this will cause my house to burn down (and also vote me down while you're at it). Or even better, help me improve the answer or give a better solution that actually works :)
My idea
The second gang goes to a light socket that is not in use. I presume that in this light socket there will be:

one set of wires that goes to my fuse box and will include a live (A) and a neutral (B). I don't know if there'll be an earth (C) too?
and another pair of wires that go to the switch. We'll call these (D) and (E)

In the redundant socket

Cap off (A)
Join (B) to (D)
Cap off (E)

In the switch
(connections on the actual switch are L, L1, G &amp; N)

Cap off (E)
(D) will become a neutral wire and can connect to N
The two wires from Gang 1 can connect to L &amp; L1.
Join the current earth that's looped into the box to G using an extra bit of wire

Result
Job done? Or ?
In the absence of doubt, this &quot;answer&quot; should not be thought of as an answer yet and will not be accepted unless enough people with more knowledge than me confirm it's safe. And... I'd still get a qualified electrician to actually do the work.