You can't hard wire into an existing socket. The sockets in the Kitchen are wired in 2.5mm twin and earth cable and protected by a 32amp circuit breaker in the Electric box. The ALDI extension uses a 1.25mm. cable and should be protected by a 13amp fuse.. You cant change cable sizes without another fuse to protect the smaller cable. Just use the RCD plug in so no one gets hurt.

Looks like a good deal, heat

1.25mm cable?

When wiring this socket I suggest putting a plug on the end of it and plugging it in, don't hard wire it in to a circuit.

Didn't realise it had a plug in RCD with it

They tend to be plug in but I would check before purchase, it may be inline but I doubt it.
Looks very similar to homebase BG socket and RCD.

Just so folks are clear, it's either the extension box or the walk socket for the price, not both!

You'll likely need a sparky to sign it off if hard wiring it in directly.

Comes with a hard wired RCD, reason it isn't already fitted, apart from the money saving aspect from the retailer, is so the cable can be fed through window frames etc, then wired.

Got one of these last year, excellent and simple. Drilled hole through garage, plugged into the socket in there and screwed on the wall outside the garage.