The flowchart for England has been updated to reflect changes to the Approved Document B (vol 1&2) that came into force on 1 December 2022.

The flowchart for Scotland has been updated to reflect changes to the Scottish Building Standards Technical Handbooks (domestic and non-domestic) that came into force on 1 December 2022.

The flowchart for Northern Ireland has been updated to reflect changes to the Technical Booklet that came into force on 1 April 2022.

The Approved Document B (vol 1&2) for Wales did not change in 2022, however this flowchart has been updated to reflect changes to the RISCAuthority branding and incorporate some editorial adjustments.