On Mon, 01 Apr 2013 21:40:49 +0100, Tim Watts wrote:

Or just cut back the conduit that is feeding the current double
socket, fit another double socket, join those as a ring and take the
existing spur from one of them,

Did I miss this being a surface fitting?

Recent comment from the OP mentioned socket near front edge of cupboard
fed by conduit. Well I think it was the OP not thread drift...

--
Cheers
Dave.