What you'll need
Always test with a voltage tester before touching any wires. A voltage tester pen costs £8 and is not optional. UK electrical regulations require fixed electrical work to comply with BS 7671.
Step-by-step guide
- Turn off the power at the consumer unitLocate your fuse box (consumer unit) and switch off the circuit that feeds the socket. If circuits aren't labelled, use a socket tester or lamp to identify which breaker controls it. Lock out the breaker if possible.
- Test with a voltage testerInsert a voltage tester pen into both slots of the socket. If it lights up, the circuit is still live — do not proceed until you've found and switched off the correct circuit. Never skip this step.
- Remove the old socketUnscrew the faceplate (usually two screws). Pull it gently away from the wall — there will be wires connecting it. Note which wire goes to which terminal before disconnecting: Live (brown or red) to L, Neutral (blue or black) to N, Earth (green/yellow stripe) to E.
- Connect the new socketConnect each wire to the matching terminal on the new socket. Push the bare copper into the terminal and tighten firmly — a loose connection is a fire risk. Gently tug each wire to confirm it's secure.
- Fit the new socketFold the wires neatly into the back box (the metal or plastic box in the wall). Screw the faceplate on, making sure the wires aren't pinched. Don't overtighten — it cracks the faceplate.
- TestTurn the circuit back on. Use a socket tester (plugs in and shows light pattern for correct wiring) to confirm the socket is wired correctly before using it.
Take a photo of the existing wiring before disconnecting anything. It takes 5 seconds and removes all doubt when reconnecting.
Expert tips for the best result
- Always buy a socket tester — £8 and it tells you immediately if wiring is correct, reversed, or open circuit
- Metal back boxes need an earth connection; plastic ones don't — check what you have before buying the socket
- USB sockets (with built-in USB ports) are a direct like-for-like swap — worth the upgrade
- If wires are old and brittle, or you find more than 2 sets of wires in the back box, stop and call an electrician
- In Scotland, all electrical work in dwellings requires notification regardless of scope
Useful tools and products
When to call a professional electrician
Adding new sockets or circuits, moving sockets, any work in bathrooms (bathroom zones have strict regulations), if wires are old and brittle, or if you find unexpected wiring in the back box.
We connect you with vetted local electricians across the UK — fast response, free quotes, guaranteed work.
💬 Get a free quote via WhatsAppFrequently asked questions
How difficult is how to change a plug socket for a beginner?
This guide is rated Easy. Replacing a like-for-like plug socket is one of the few electrical tasks permitted for non-electricians under UK regulations (Part P). You can change a single socket for a double, or replace a damaged If you're not confident, a professional electrician can do this quickly and provide a guarantee on the work.
How long does how to change a plug socket take?
Allow 20-30 minutes. This assumes the tools and materials are ready before you start. First-timers should budget extra time for preparation and any unexpected issues.
How much does a electrician charge for this in the UK?
Most electricians charge £40-80 per hour depending on location and complexity. For a straightforward job like this, expect 1-2 hours of labour plus materials. Get a fixed quote via WhatsApp — message us with your postcode and job details.
How do I find a reliable electrician near me?
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