As a leaseholder, you are responsible for the maintenance of all gas appliances and flues in your property.

You are required to have them checked for safety at least once every 12 months.

If you sublet your property, as a landlord, you actually have a legal responsibility to your tenant under the Gas Safety (Installations and Use) Regulations 1998. You must ensure that an annual safety check is carried out on each appliance and/or flue that you provide for tenants use, and that a record of each safety check is kept for 2 years

Further information can be found at the Health and Safety Executive (HSE) website 'The Law on gas safety'.

The HSE also publishes some guidance on how to keep gas appliances safe and your responsibilities as a landlord.