Question to the Department for Business, Energy and Industrial Strategy:

To ask the Secretary of State for Business, Energy and Industrial Strategy, what recent estimate his Department has made of number of (a) businesses and (b) individuals that are qualified to implement retrofitting measures in (i) homes and (ii) other buildings in England.

For work carried out under Government schemes installers are required to be TrustMark registered. There are additional certifications required for energy efficiency measures (PAS - Publicly Available Specifications) and low carbon heating measures (MCS - Microgeneration Certification Scheme). In November 2022, there were 1782 TrustMark businesses across the UK which were certified to PAS or MCS standards.

The Mace market intelligence report commissioned by BEIS last year outlined that in 2021 there were 154,748 individuals installing energy efficiency measures in England. Research undertaken last year by Eunomia indicates there are between 36,000 and 87,000 non-domestic retrofit businesses in the UK.