Choosing a socket used to be simple: white plastic, three pins, done. But as kitchens have become workspaces, charging stations, and social spaces, the humble socket has had to work harder. They’re often a design afterthought, despite being used dozens of times a day, but understanding what sits behind that faceplate is a great first step towards changing that. From the UK standard to USB integration, single versus double, and the finishes that hold a room together, here’s the ultimate guide to plug sockets. 

What Plug Sockets Does the UK Use?

Britain runs on BS 1363, the three-pin standard - a system designed with safety built in at every stage. The three rectangular pins carry live, neutral, and earth wires, with the longer earth pin acting first to open the shutters over the live and neutral terminals. Every UK plug also contains its own fuse, typically 3A or 13A, so protection sits at the appliance as well as the consumer unit.

Sockets are rated at 13A, which supports up to 3,000 watts on a 230V supply. UK homes are typically wired on a ring final circuit, or ring main, where sockets loop from the consumer unit and back again.

The part that matters when you are choosing sockets is what sits behind the wall. Faceplates fix to a metal or plastic back-box, which comes in several depths. The most common options are 25mm and 35mm metal back boxes (as well as 16mm, which are slowly becoming obsolete, and 47mm, which are rarer and reserved for much larger modules). 

Deeper 35mm boxes give more room for wiring, which becomes relevant once you add USB modules or move from a single to a double. Check your box depth before you buy, as a plate that will not seat properly is a frustrating discovery halfway through a job.

USB Sockets: The Practical Option

Integrated USB sockets are a practical upgrade in a modern home. Rather than surrendering a full three-pin outlet to a charging brick, the USB ports are built into the faceplate itself, keeping the socket free for a lamp, a kettle, or anything else that actually needs it.

The real decision is USB-A versus USB-C. USB-A is the older rectangular port that most homes and charging leads still rely on, but USB-C is where everything is heading. The slimline, oval USB-C port is reversible, faster, and now the standard connector across newer phones, tablets, and laptops.  All our faceplates offer one of each, which is the sensible option while most people still use a mix of cables. 

Pay attention to the output figure printed on the plate, too: a socket that delivers more power per port will charge a modern device meaningfully faster than an older, low-output unit. If you are wiring a bedside, a kitchen worktop, or a home office, USB integration removes clutter almost immediately.

Can a Single Socket Be Changed to a Double?

In many homes, yes, and it is one of the more satisfying small upgrades available. The answer depends almost entirely on the back-box.

If a single socket sits in a double back-box (which is more common than people expect), swapping the faceplate for a double is straightforward. If it sits in a single box, the box itself needs enlarging, which means cutting the plasterwork or masonry to fit a double back-box before the new plate goes on. There is also the circuit to consider. A socket fed from the ring main will usually accommodate the extra outlet without issue, whereas one wired as a spur has limits on what it can safely serve.

Electrical work of this kind should always be carried out by a qualified electrician. A competent installer will confirm the box, the circuit, and the load before anything is changed, which protects both the work and your home.

Finish Options: Matching Sockets to a Scheme

Once the technical side is taken care of, the finish is what turns sockets from a functional necessity into part of the overall design concept. The options are plentiful.  Antique brass and black walnut finishes bring warmth and depth, while a satin finish offers a softer, sleeker sheen. Matte black, on the other hand, suits cooler, more contemporary schemes. 

A good approach is to choose a finish that works with the existing feel of the room, instead of fighting with it. Warmer metals such as brass sit beautifully against more rustic materials like wood, stone, and darker, richer paint colours, while cooler metal tones tend to better suit crisp, minimal spaces with clean, bright colourways. Running three or four unrelated finishes through the same room tends to undermine a scheme, because the surfaces end up competing

It’s always wise to treat sockets and switches together, as a brass-finish socket beside a plastic light switch will do exactly what you do not want: draw the eye straight to the mismatch. Choosing a matching range of switches and sockets is the simplest way to keep the overall scheme consistent, and the space feeling properly finished.

What Are the Benefits of Brass Sockets?

A quality brass finish is a very different prospect to the moulded plastic and thinly plated fittings that come as standard. Plastic doesn’t age the way that brass does; it can yellow and become brittle over time. Thin-plated finishes similarly degrade with use, scuffing and wearing through. A natural, high-quality brass finish does the opposite. It is dense, hard-wearing, and ages into a richer surface without deteriorating.

That ageing is termed the patina. Left unlacquered, brass gradually develops a deeper, warmer tone as it reacts with the air and with handling - which is why period properties often show such beautiful brass door and window furniture. If you prefer a more consistent look, a lacquered brass finish holds its original finish for longer. Either way, you are buying a fitting made to last, backed by genuine craftsmanship. 

While the technical decisions narrow the field, the finish is where the space becomes yours - and that part is worth getting right. Explore the full range of brass switches and sockets and see how the right details can bring a room together.

FAQs

Do I need an electrician to fit a new socket?

 For work that alters the circuit, such as adding a spur or converting a single socket to a double, it’s best to use a qualified electrician. Avoid fitting metal faceplates on freshly plastered, painted or damp walls. This type of work may fall under Part P of the Building Regulations and should always be completed safely and correctly. 

Will brass-finished sockets tarnish over time? 

Unlacquered brass develops a natural patina, deepening in tone as it ages. Lacquered brass keeps its original appearance for much longer, making it a good choice if you prefer a more consistent finish. 

Are USB-C sockets worth it over USB-A? 

For newer phones, tablets, and laptops, yes. USB-C is faster, reversible, and becoming the standard connector across modern devices. A plate offering both ports is the most practical choice while households still use a mix of cables. 

Can I mix socket finishes in the same room? 

Ideally, keep to one finish family within a single space. Mixing unrelated metals can make a room feel chaotic, while a matched range helps create a more coherent overall look. 

What is the standard height for plug sockets?

In the UK, the standard height for plug sockets is 450 mm- 1200 mm from the floor, as specified under Part M of the Building Regulations for new dwellings