FTSE UK Index Series Ground Rules Version 17.1

This document is a technical report detailing the Ground Rules for the FTSE UK Index Series, version 17.1, published in April 2026. It outlines the structure and management responsibilities associated with the index series, which is designed to represent the performance of major capital and industry segments of the UK market. The report includes sections on management responsibilities, index policies, security inclusion criteria, and corporate actions. It specifies the roles of FTSE International Limited as the benchmark administrator and the responsibilities for daily calculations and periodic reviews. Additionally, it discusses the index's objective, intended use, and the importance of adhering to the IOSCO Principles for Financial Benchmarks. The document also emphasizes the need for users to assess the merits of the index's rules-based methodology and to seek independent investment advice. Regular reviews and potential amendments to the Ground Rules are also addressed.