The Smoke and Carbon Monoxide Alarms (England) Regulations 2015 came into force on the 1st October 2015 requiring all landlords to have at least one smoke alarm installed on every storey of their property and a carbon monoxide alarm fitted in any room containing a solid fuel burning appliance (eg. a wood burning stove, coal fire) and thereafter at the start of a new tenancy to ensure they are in proper working order. This is a minimum requirement and additional or upgraded fire detection may be required under the Housing Act 2004 regulations if for example there are more than two storeys or the escape route is not suitably fire protected. The DCLG have produced an explanatory booklet on these requirements and any exemptions which may apply Smoke and carbon monoxide alarms: explanatory booklet.
For tips on improving fire safety in your home please read Fire safety in private rented property.