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Exhibit 17.1

Subsidiary Guarantors and Issuers of Guaranteed Registered Securities

Registered U.S. BondsSubsidiary IssuerParent GuarantorSubsidiary Guarantor
5.125% bonds due
September 2042

5.625% bonds due
November 2043
WPP Finance 2010WPP plc
WPP Jubilee Limited,
WPP 2005 Limited