You may be eligible for a variety of grants.  Eligibility differs according to the measure, the applicable scheme and your house's situation.  Homeowners (including landlords) and tenants can apply. 

GBIS (Great British Insulation Scheme)
The scheme launched in August 2023 and offers wider eligibility than previous schemes within ECO.   To qualify for either cavity wall insulation or additional loft insulation, your property simply has to be D (or below) rated EPC  and have a Council Tax Band of A-D. 

ECO & Flex
This scheme is open to anyone who receives certain benefits or a household with total household income is below £31,000 per annum.  There are certain maximum earnings limits - information should be available to view on your Local Authority's website.