@Sarah351 I don't know if this effects you or not but its better to be informed
Energy Performance Certificates: new requirement for rental properties
You may have heard that, from 1 April 2018, there has been a change to the requirements for Energy Performance Certificates. Under the new rules, any property that is being rented to tenants is now required to have a minimum energy performance rating of “E”. This means that it is now unlawful to rent a property with an “F” or “G” rating and doing so will risk a fine of up to £4,000.
However, there is an exemption to the new rules for properties that are being used for holiday lets so the operators of self-catering cottage do not have to worry about this requirement. One area where there may be a problem is if you are letting a property to people on short-term assured tenancy during winter periods or to house temporary workers for short periods. This type of activity would be deemed to be renting and the requirement for the property to have an energy performance rate of at least “E” would apply.