Question to the Department for Energy Security & Net Zero:

To ask His Majesty's Government what estimate they have made of the number of qualified insulation installers in the country.

The Department does not have an exact figure for the number of individual qualified insulation installers operating in the market. However, to be able to work on the Government’s energy efficiency schemes, a business installing fabric insulation must be registered with TrustMark to ensure compliance with PAS 2035/2030. As of January 2025, there are around 900 insulation installer businesses registered with TrustMark that can work on the Government’s energy efficiency schemes. The Government is working with the sector to improve our understanding of the retrofit supply chain to support delivery of the Warm Homes Plan.