A double socket that also boosts your Wi-Fi sounds like a gimmick bolted onto a switch plate. It isn't, but it won't fix every dead spot in the house either.

How Does a Wi-Fi Extender Socket Actually Work?

Inside the faceplate sits the same kind of receiver you would find in a plug-in Wi-Fi extender. Press the WPS button on your router, then the button on the socket, and it pairs to your existing network and rebroadcasts the signal from wherever it is fitted. It is not creating new bandwidth from nothing, it is picking up your existing signal at the socket's location and pushing it back out, exactly like a standalone extender, just built into a socket you were probably going to fit anyway.

That matters for expectations: if your router's signal barely reaches the room in the first place, the extender socket has very little to work with and will struggle the same way any extender would.

Where It Actually Helps, and Where It Doesn't

These sockets earn their place in a specific situation: a room that gets a weak but present signal, where you would be fitting a socket in that location regardless. A converted loft office, a garden room, or a back bedroom just past the router's effective range are the classic use cases.

Where they fall short is whole-house coverage in a larger property. A single extender socket, plug-in or built-in, only rebroadcasts from one point. If you need consistent coverage across several rooms or floors, a proper mesh Wi-Fi system with multiple nodes is the more reliable fix, and it does not depend on your electrical sockets being in the right place to catch a signal.

Installation: What You Need to Know

BG's Wi-Fi extender sockets fit a standard 25mm back box, the same depth as most existing double sockets, so in most cases it is a straightforward like-for-like swap rather than new wiring. Part P guidance confirms that replacements, repairs and maintenance on an existing circuit outside a special location like a bathroom are not notifiable work in England and Wales, but it should still be carried out to BS 7671 standards, and if you are at all unsure about isolating the circuit safely, it is a five-minute job for an electrician rather than a DIY one.

The Nexus Metal versions above sit alongside the wider British General range, and the screwless Evolve finishes shown match the rest of the BG Evolve Black Chrome collection if you're specifying a whole room to one finish.

Is It Worth the Extra Cost?

An extender socket runs somewhere in the £35-£45 range, against roughly £20-£30 for a basic plug-in Wi-Fi extender that takes up a socket outlet of its own. Once you account for the fact that a plug-in extender occupies one socket permanently, and the BG version replaces a socket you likely needed anyway, the price gap narrows to a few pounds for a considerably tidier result with no adaptor hanging off the wall.

Where it does not make sense is if you already have decent signal everywhere and are buying one speculatively. Test the actual signal in the room first with a phone before committing, since no extender, built-in or otherwise, improves on a signal that barely exists to begin with.

Frequently Asked Questions