TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARES

TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARES

1. Identity of the issuer or the underlying issuerof existing shares to which voting rights areattached:

WPP PLC

2 Reason for the notification (please tick the appropriate box or boxes):

An acquisition or disposal of voting rights

S

An acquisition or disposal of qualifying financial instruments which may result in the acquisition of shares already issued to which voting rights are attached

¨

An acquisition or disposal of instruments with similar economic effect to qualifying financial instruments

¨

An event changing the breakdown of voting rights

¨

Other (please specify):

¨

3. Full name of person(s) subject to thenotification obligation:

BlackRock, Inc.

4. Full name of shareholder(s) (if different from 3.):

5. Date of the transaction and date onwhich the threshold is crossed orreached:

6 May, 2016

6. Date on which issuer notified:

9 May, 2016

7. Threshold(s) that is/are crossed orreached:

Voting rights attached to shares holding for BlackRock, Inc. has gone above 5%

8. Notified details:

A: Voting rights attached to shares

Class/type ofshares

if possible usingthe ISIN CODE

Situation previousto the triggeringtransaction

Resulting situation after the triggering transaction

NumberofShares

NumberofVotingRights

Numberof shares

Number of votingrights

% of voting rights

Direct

Direct

Indirect

Direct

Indirect

JE00B8KF9B49

64,712,289

64,712,289

N/A

N/A

64,811,350

N/A

5.00%

B: Qualifying Financial Instruments

Resulting situation after the triggering transaction

Type of financialinstrument

Expirationdate

Exercise/Conversion Period

Number of votingrights that may beacquired if theinstrument isexercised/ converted.

% of votingrights

American Depository Receipt

220

0.00%

C: Financial Instruments with similar economic effect to Qualifying Financial Instruments

Resulting situation after the triggering transaction

Type of financialinstrument

Exercise price

Expiration date

Exercise/Conversion period

Number of voting rights instrument refers to

% of voting rights

CFD

139,085

Nominal

Delta

0.01%

0.01%

Total (A+B+C)

Number of voting rights

Percentage of voting rights

64,950,655

5.01%

9. Chain of controlled undertakings through which the voting rights and/or thefinancial instruments are effectively held, if applicable:

See Annex

Proxy Voting:

10. Name of the proxy holder:

11. Number of voting rights proxy holder will ceaseto hold:

12. Date on which proxy holder will cease to holdvoting rights:

13. Additional information:

BlackRock Regulatory Threshold Reporting Team

14. Contact name:

Gareth Slade

15. Contact telephone number:

020 7743 3650