Notification of Major Holdings

This report details a notification of major holdings by BlackRock, Inc. in WPP plc, filed on December 22, 2025. The notification concerns an acquisition or disposal of voting rights and/or financial instruments. As of December 19, 2025, BlackRock, Inc. held a total of 9.930000% of WPP plc's voting rights. This comprises 8.290000% directly through shares and 1.640000% through financial instruments, including American Depository Receipts and securities lending. The previous notification indicated a holding of 12.240000%. The filing provides a detailed breakdown of the chain of controlled undertakings through which BlackRock effectively holds these voting rights and financial instruments. The report was completed on December 22, 2025, in London, UK.