UK Red Book: RICS Valuation – Global Standards 2017 - UK national supplement
As paragraph 4.3 of the RICS Valuation - Global Standards 2017 explains, for a number of jurisdictions RICS publishes national supplements to the Red Book global standards to assist members in the application of those standards in a local context.
The UK national supplement augments the Global Red Book for valuations that are subject to UK jurisdiction. The latest edition published on 14 November is effective for valuations where the valuation date is on or after 14 January 2019. The previous edition is effective for valuations where the valuation date is on or after 6 January 2014 (with certain elements effective from 1 January 2015) but before 14 January 2019.