Light switch sparks
This is an electrical fault. Do not open the switch. If there is smoke or a burning smell, leave and call 112. When it is safe, a licensed electrician replaces it.
What it usually is
- The mechanism inside is worn.
- A terminal is loose.
- There is damp in the box.
What you can safely do now
- Do not use that switch.
- If the consumer unit is dry and you can reach it without stepping through water, you can switch that circuit off.
- If there is smoke, sparks that continue, or a strong burning smell, leave and call 112.
When it's urgent
Treat it as urgent. Do not wait if there is smoke or heat.
Typical fixed price
The price is confirmed in the app, from your photo.
Encertum uses an AI assistant to understand your problem. It suggests a likely fault and price; a licensed technician confirms on site. You can talk to a person at any time.