Since the first edition of this guide was published, various UK government subsidy schemes for improving the energy efficiency of homes have closed.

In December 2023, the UK government allocated GBP 6 billion to launch various funding schemes to reduce energy use in residential properties, support a move from gas boilers to electric heat pumps, and improve insulation. For commercial properties, grants of up to GBP 7,500 are available to fund the cost of a heat pump.