Notification of Major Holdings

This report details a notification of major holdings by BlackRock in WPP plc, filed on April 9, 2026. The notification, dated April 8, 2026, indicates a change in BlackRock's total voting rights and financial instrument holdings in WPP plc. The total voting rights held by BlackRock, including those attached to shares and financial instruments, now stand at 6.57%, a decrease from the previous notification of 6.89%. Specifically, direct voting rights through shares are 4.76% (51,359,048 shares), and indirect voting rights through financial instruments are 1.81%. The filing also provides a detailed breakdown of the various financial instruments and the chain of controlled undertakings through which these holdings are managed. This filing is made pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934.