If you smell gas, think you have a gas leak, or are worried that fumes containing carbon monoxide are escaping from a gas appliance, please call the free Gas Emergency Services emergency line immediately on 0800 111 999.

Also:

  1. Open all doors and windows to ventilate the property.
  2. Do not turn on/off any electrical switches.
  3. Extinguish all naked flames, do not smoke, strike matches or do anything which could cause ignition.
  4. If there are any electrical security entry phones/locks, please open the door manually.