Minimum Energy Efficiency Standards (MEES) Legislation
In April 2018 Minimum Energy Efficiency Standards introduced made it a legal requirement for all privately owned properties to have an EPC rating of at least an ‘E’ before they are sold or let. The legislation applies to both domestic and commercial properties, although there are some exemptions, for example if a property is a listed building.
Those who fail to make the necessary changes will be subject to the appropriate fines: up to £5,000 for domestic dwellings
Here is the link for the government information of EPCs
Its not the most exciting read so probably easier to give me a call or email so I can answer any queries you may have