All 32 London boroughs

Smell gas? Leave the property, avoid switches and flames, and call the National Gas Emergency line free on 0800 111 999 first. Once you're safe, call us on 020 3000 0000 for the repair.

Boiler Guides, Written by Engineers Who Fix Them

Plain-English answers to the questions London asks us every day: what that error code means, what a repair should cost, and when to stop repairing altogether. No jargon, no scare tactics, and every guide ends with what to do next.

Radiators Not Heating Up: Cold Top, Cold Bottom, Cold Rooms

Match your cold spot to its cause: air, sludge, balancing or a stuck valve.

September 7, 2026

Boiler Making Banging or Whistling Noises: Kettling Explained

Why a boiler bangs, what limescale and sludge have to do with it, and what

September 7, 2026

Boiler Leaking Water: What to Do First and What It Means

Where the water is coming from tells you how serious it is. Safe first steps

September 5, 2026

No Hot Water? The Checklist Engineers Use First

No hot water usually comes down to one of five causes: low boiler pressure, a

July 18, 2026

Boiler Losing Pressure? Causes and How to Fix It

The three causes of a dropping pressure gauge, and when a top-up is masking a

July 5, 2026