If you think you have a gas leak, the first thing you should do is make yourself safe.
Turn off your gas, at the meter if possible, and then call the National Gas Service Emergency Line on 0800 111 999.
To stay safe:
- don't smoke
- don't light matches or cigarette lighters
- don't turn light switches or anything electrical on or off, including using mobile phones
- put out any naked flames such as candles
- open all the doors and windows