EXHIBIT 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in this registration statement on Form S-8 of our reports dated 26 April 2019, relating to the consolidated financial statements of WPP plc and subsidiaries (the “Company”) (which report expresses an unqualified opinion and includes an explanatory paragraph regarding the Company’s change in its method of accounting for revenue from contracts with customers for each of the three years in the period ended 31 December 2018 due to the adoption of International Financial Reporting Standard 15 Revenue from Contracts with Customers), and the effectiveness of the Company’s internal control over financial reporting, appearing in the Annual Report on Form 20-F of WPP plc for the year ended 31 December 2018.

/s/ Deloitte LLP

London, United Kingdom

14 June 2019