How to choose an emergency plumber in London

Credentials checklist

• Gas Safe registration for any boiler, gas appliance or gas pipework work — it is a legal requirement.
• Public liability insurance, so damage to your property is covered.
• A written workmanship guarantee on the repair.
• A real business name, a working phone number and itemised invoices.
• Engineers who carry photo ID and explain what they are doing.

How to verify Gas Safe registration

1. Ask the engineer to show their Gas Safe ID card. It shows their photo, licence number and the types of gas work they are qualified for.
2. Check the back of the card to make sure they are qualified for the specific job, such as boilers or cookers.
3. Search the licence number or business name on the Gas Safe Register website, or call the Gas Safe Register to confirm.
4. Make sure the registration is current and the name matches the person at your door.

Questions to ask before the engineer arrives

Our answers: fixed-price repairs from £120+VAT, no out-of-hours surcharge, with you within 45-60 minutes, parts agreed in writing before fitting, and a 12-month workmanship guarantee.

• What is the price, and is it fixed or hourly?
• Do you charge more at night, weekends or bank holidays?
• How quickly can you get here?
• Are parts included, and will you agree them with me before fitting?
• Is the work guaranteed, and for how long?

Red flags to watch for

• No price until the engineer is already in your home.
• Vague "from" prices that jump once work starts, or pressure to pay cash upfront.
• No business address, landline or written invoice.
• Refusing to show a Gas Safe ID card for boiler or gas work.
• Unexplained "urgent" extra work you did not ask for.
• Arrival promises that are unrealistic for your location and time of night.

Why the first phone call matters

In an emergency it is tempting to book the first number you find. Taking two minutes to ask the questions above protects you from rogue traders. A good emergency plumber will answer them clearly on the phone, before anyone sets off, and will put the price in writing on the invoice.

Frequently asked questions