Question to the Department for Energy Security & Net Zero:

To ask the Secretary of State for Energy Security and Net Zero, what estimate he has made of the number of (a) homes and (b) commercial premises that have oil heating (i) in Witham constituency, (ii) in Essex and (iii) nationally.

The Office for National Statistics publish 2021 Census estimates of occupied household spaces in England and Wales by central heating type, at lower tier local authority level: https://www.ons.gov.uk/datasets/TS046/editions/2021/versions/4

The evidence base for non-domestic buildings is being developed by this Department through the Non-Domestic Building Stock project. Analysis of a survey of large off-gas grid buildings shows national-level estimates of energy source in Tables 26 and 27: https://assets.publishing.service.gov.uk/media/65c3bc2c28a4a00012d2ba61/non-domestic-building-stock-large-off-gas-grid-premises.pdf

The Department also publishes non-domestic building statistics in England and Wales. Tables 3A and 10 include data on the number of off-gas grid buildings, broken down to lower authority and constituency level:

https://assets.publishing.service.gov.uk/media/65d605b52197b200117fa7ad/nd-need-2023-geographical-annex-data-tables.xlsx