All landlords in England are required to supply fully-working Smoke and Carbon Monoxide Alarms:
- Install a smoke alarm on each floor of the premises on which there is a room used wholly or partly as living accommodation.
- Equip a carbon monoxide alarm in any room of the premises which is used wholly or partly as living accommodation and contains a solid fuel burning combustion appliance (e.g. a coal fire, wood burning stove).
More details on legislation here.