These Regulations, which apply in England and Wales, amend the Boiler Upgrade Scheme (England and Wales) Regulations 2022 S.I. 2022/565 (“the 2022 Regulations”), which established the Boiler Upgrade Scheme (“BUS”). BUS is a renewable heat incentive scheme to facilitate and encourage the use of heat pumps and biomass boilers to provide space and water heating in domestic properties and small non-domestic properties. BUS supports the installation of heat pumps and biomass boilers through a grant mechanism provided that they do not replace an existing renewable heating system.