Mogweed wrote:
My question is, should it be an ordinary 13A plug and socket arrangement
within the housing or maybe a switched fused connection unit above the
worktop (to act as an isolator) with a piece of 2.5mm T&E going down to some
sort of connector unit within the housing?

The 13A plug and socket arrangement within the housing wouldn't be
compliant, because you need to be able to isolate the appliance without
having to lug it out of the housing first.

My preferred solution is to mount a socket on the wall immediately
behind an adjacent cupboard, and to cut a hole about 3" diameter in the
back of said cupboard to permit access to the socket. You plug the
appliance in there, and can easily stick your mitt through the hole to
switch off the socket / unplug the plug / change the fuse in the plug as
required.

If you really wanted to do the FCU route, you could have still fit this
socket in the same way, but have it controlled by an FCU above the
worktop. Not a lot of point though!

--
David