Any advice from anyone on how best to apply for government grant to replace 10 year old gas combi boiler. Just had a call-back from national supplier asking for a £1400 contribution! I qualify for full discount so seems very high to me.
Sounds like you’re referring to the government ECO scheme.
You can find out more about this on Ofgem’s page: https://www.ofgem.gov.uk/environmental-programmes/eco/support-improving-your-home
Hope you can get that boiler upgraded!