FIRST QUARTER 2019 TRADING UPDATE 26 APRIL 2019

FIRST QUARTER 2019 TRADING UPDATE 1 SAFE HARBOUR STATEMENT

In order to utilise the ‘safe harbour’ provisions of the United States Private Securities Litigation Reform Act of 1995 (the ‘PSLRA’), WPP plc is providing the following cautionary statement. This presentation contains certain forward-looking statements – that is, statements related to future, not past events and circumstances – which may relate to one or more of the financial conditions, results of operations and businesses of WPP plc and certain of the plans and objectives of WPP with respect to these items. These statements are generally, but not always, identified by the use of words such as ‘will’, ‘expects’, ‘is expected to’, ‘aims’, ‘should’, ‘may’, ‘objective’, ‘is likely to’, ‘intends’, ‘believes’, ‘anticipates’, ‘plans’, ‘we see’ or similar expressions. Actual results may differ from those expressed in such statements, depending on a variety of factors including the risk factors set forth in our most recent Annual Report and Form 20-F under “Risk factors” and in any of our more recent public reports. Nothing in this presentation is intended as a forecast, nor should it be taken as such.

Our most recent Annual Report and Form 20-F and other period filings are available on our website at www.wpp.com, or can be obtained from the SEC by calling 1-800-SEC-0330 or on its website at www.sec.gov.

FIRST QUARTER 2019 TRADING UPDATE 2 FIRST QUARTER 2019 TRADING UPDATE

PROGRESS ON STRATEGY

CONCLUSION AND Q&A

FIRST QUARTER 2019 TRADING UPDATE 3 INTRODUCTION

• Continue to make good progress implementing our 3 year strategy to return WPP to sustainable growth • As anticipated, first quarter trading update reflects impact of certain significant 2018 client losses, particularly in USA • Financial guidance for full year unchanged • Newly formed agencies showing initial signs of success in new business pitches: – Most recent merger Thompson wins Duracell international creative account – VMLY&R strong start, over $50M new business in first 6 months – BCW nearly $70M new business in first year • Key 2019 priority is to address USA growth and we remain committed to taking all actions necessary to position WPP for future success

FIRST QUARTER 2019 TRADING UPDATE 4 FIRST QUARTER 2019 TRADING UPDATE

FIRST QUARTER 2019 TRADING UPDATE 5 FIRST QUARTER 2019 HIGHLIGHTS

• Reported revenue £3.588B up 0.9%, like-for-like -1.3% • Reported revenue less pass-through costs £2.926B -0.7%, like-for-like -2.8% • North America like-for-like revenue less pass-through costs -8.5%, weakest performing region, although in line with budgets, due to continued pressure and impact of automotive, pharmaceutical, FMCG assignments lost in 2018 • UK like-for-like revenue less pass-through costs -0.9%, slight decline on 2018 FY performance • Western Continental Europe like-for-like revenue less pass-through costs -0.3%. Belgium, Denmark, Finland, Netherlands, Turkey up strongly. Austria, Italy, Spain more challenging • Asia Pacific, Latin America, Africa & M East and C&E Europe strongest performing region, like- for-like revenue less pass-through costs up 2.3%. Strong growth Latin America, C&E Europe and SE Asia. Australia and New Zealand more difficult • Significant reduction in average net debt for first quarter 2019 to £4.163B, down £712M at 2019 exchange rates

FIRST QUARTER 2019 TRADING UPDATE 6 REVENUE LESS PASS-THROUGH COSTS GROWTH VS PRIOR YEAR

Like-for-like -2.8%

Acquisitions 0.5%

FX 1.6%

Reported -0.7%

FIRST QUARTER 2019 TRADING UPDATE 7 IMPACT OF FX ON REVENUE LESS PASS-THROUGH COSTS

2018 FY ACT 2019 Q1 ACT 2019 Q2 EST 2019 Q3 EST 2019 Q4 EST 2019 FY EST 2%

• 2019 Q1 currency 1% 1.6% tailwind 1.6% 0.9% 0.1% • 2019 expected 0% currency neutral at latest exchange rates -0.8% -1.2% • 2018 full year -1% headwind 2.8% -2.8%

-2%

-3%

FIRST QUARTER 2019 TRADING UPDATE 8 REVENUE LESS PASS-THROUGH COSTS BY REGION

Δ CONSTANT Δ LIKE- % GROUP 2019 £M 2018 £M Δ REPORTED CURRENCY FOR-LIKE

North America 35.6 1,043 1,055 -1.2% -7.3% -8.5%

UK 13.7 400 405 -1.1% -1.1% -0.9%

Western Continental Europe 21.1 616 626 -1.6% 0.2% -0.3%

Asia Pacific, Latin America, Africa & Middle 29.6 867 862 0.6% 2.0% 2.3% East and Central & Eastern Europe

Total 100.0 2,926 2,948 -0.7% -2.3% -2.8%

FIRST QUARTER 2019 TRADING UPDATE 9 REVENUE LESS PASS-THROUGH COSTS GROWTH BY REGION LIKE-FOR-LIKE %

C. & E. Europe % FY/18 Q1/19 6.9 5.0

UK % FY/18 Q1/19 -0.5 -0.9 North America % FY/18 Q1/19 W. Cont. Europe % -4.2 -8.5 FY/18 Q1/19 2.0 -0.3

Asia Pacific % FY/18 Q1/19 1.2 1.4

Africa & M. East % FY/18 Q1/19 -3.1 -4.7

Latin America % FY/18 Q1/19 7.9 8.0 % FY/18 Q1/19 Mature Markets -1.7 -4.7 Faster Growing Markets 2.5 2.3 Total -0.4 -2.8 FIRST QUARTER 2019 TRADING UPDATE 10 MAJOR MARKETS

USA UK Germany Greater China² France

REVENUE LESS PASS-THROUGH COSTS GROWTH¹ 2019 Q1 -8.8% -0.9% 0.4% 4.5% -1.5%

2018 FY -4.2% -0.5% 0.0% 2.1% 0.1%

1. Like-for-like growth vs prior year 2. Includes Hong Kong and Taiwan FIRST QUARTER 2019 TRADING UPDATE 11 BRIC MARKETS

Mainland China Greater China² Brazil India Russia

REVENUE LESS PASS-THROUGH COSTS GROWTH¹ 2019 Q1 6.6% 4.5% 8.6% 9.3% -1.1%

2018 FY 2.6% 2.1% 5.6% 5.5% 1.3%

1. Like-for-like growth vs prior year 2. Includes Hong Kong and Taiwan FIRST QUARTER 2019 TRADING UPDATE 12 REVENUE LESS PASS-THROUGH COSTS BY SECTOR

Δ CONSTANT Δ LIKE- % GROUP 2019 £M 2018 £M Δ REPORTED CURRENCY FOR-LIKE and Media Investment 42.5 1,244 1,290¹ -3.6% -4.7% -4.8% Management

Data Investment Management 15.6 456 455 0.3% 0.3% 0.1%

Public Relations & Public Affairs 9.2 270 263 2.7% -0.2% -0.3%

Brand Consulting, Health & Wellness and Specialist 32.7 956 940¹ 1.7% -0.7% -2.1% Communications

Total 100.0 2,926 2,948 -0.7% -2.3% -2.8%

1. In 2019 certain business units have been reclassified between advertising and media investment management, and brand consulting, health & wellness and specialist communications. As result the comparative data for 2018, together with the reported and constant currency growth rates, have been restated. FIRST QUARTER 2019 TRADING UPDATE 13 TRADE ESTIMATES OF ASSIGNMENT WINS¹

MEDIA (M)/ WPP AGENCY CREATIVE (C) INCUMBENT ACCOUNT OFFICE BILLINGS $M MediaCom M OMC Signet N. America 360 M OMC Huawei China 350 M DEN/PUB KangShiFu Drinks China 145 C N/A Duracell International 100 Mindshare M N/A GSK India 82 Wavemaker M N/A Little Red Book China 66 Wavemaker M N/A Chimelong China 47 WPP C N/A Distell Global 45 MediaCom M DEN Adidas EMEA 42 Mindshare M OMC Newell Brands N. America 40 Grey C MDC Nokia Global 40

Underlined are Q2 wins 1. No significant losses reported FIRST QUARTER 2019 TRADING UPDATE 14 NET DEBT

31 MARCH YTD: 2019 £M 2018 £M Δ £M Average net debt on constant currency basis (4,163) (4,875) 712 Average net debt on reportable basis (4,163) (4,773) 610 Net debt at 31 March on constant currency basis (4,624) (5,500) 876 Net debt at 31 March on reportable basis (4,624) (5,343) 719

FIRST QUARTER 2019 TRADING UPDATE 15 USES OF FREE CASH FLOW FY MARCH YTD MARCH YTD FY TARGET 2019 2018 2018 (Disposals)/acquisitions (excluding earnouts): Acquisitions¹ C. £200M £18M £80M £288M Less disposals² C. £(200M) £(179M) £(44M) £(849M) Net (disposals)/acquisitions NEUTRAL £(161M) £36M £(561M) Share buy-backs: - - £145M £207M % of issued share capital - - 0.9% 1.3% Balance Sheet Headroom: Undrawn facilities & surplus cash - £3.3B £2.6B £4.3B Average net debt at 2019 exchange rates - £4.2B £4.9B £5.0B³

Target range of average net debt/EBITDA ratio⁴ of 1.5-1.75x to be achieved by end of 2021

1. Acquisitions are initial payments, net of cash acquired, and include other investments and associates 2. Disposals include proceeds from sale of property, other investments and associates 3. FY 2018 net debt stated at 2018 actual exchange rates FIRST QUARTER 2019 TRADING UPDATE 16 4. Net debt/EBITDA ratio calculated excluding impact of IFRS16: Leases DISPOSAL PROCEEDS

Q1 2019 £M Property - 3 Columbus Circle, New York City 157 Sale of other investments and associates 22 Total 179

FIRST QUARTER 2019 TRADING UPDATE 17 OUTLOOK

Our 2019 financial targets remain as: • Like-for-like revenue less pass-through costs -1.5% to -2.0%, with stronger headwinds in first half, due to client assignment losses in latter 2018

• Headline operating margin down around 1.0 margin point on constant currency basis (excluding impact of IFRS 16: Leases)

FIRST QUARTER 2019 TRADING UPDATE 18 PROGRESS ON STRATEGY

FIRST QUARTER 2019 TRADING UPDATE 19 RADICAL EVOLUTION: A STRATEGY FOR GROWTH

VISION AND DATA AND CREATIVITY OFFER TECHNOLOGY

SIMPLER STRUCTURE CULTURE

FIRST QUARTER 2019 TRADING UPDATE 20 FIRST QUARTER STRATEGY UPDATE

• New strategy resonating well with clients • Solid new business performance and client stability • Strengthening team and leadership • Technology: partnership with Adobe, Microsoft and SAP on the Open Data Initiative • Disposals of £179M including property – average net debt for first quarter 2019 down £712M • Continuing progress on disposal of Kantar • Restructuring on track

FIRST QUARTER 2019 TRADING UPDATE 21 OTHER FINANCIAL INFORMATION

FIRST QUARTER 2019 TRADING UPDATE 22 REVENUE LESS PASS-THROUGH COSTS GROWTH BY COUNTRY

REVENUE LESS PASS-THROUGH COSTS GROWTH¹ TOP COUNTRIES²

More than 10% Argentina, Belgium, Denmark, Turkey

5% to 10% Brazil, Mainland China, India, Mexico, Poland

Greater China³, Germany, Indonesia, Netherlands, 0% to 5% Sweden

Canada, Colombia, Dubai, France, Italy, Japan, Russia, Less than 0% Singapore, South Africa, South Korea, Spain, Switzerland, Thailand, UK, USA

1. Like-for-like growth vs prior year 2. Australia and New Zealand not disclosed as WPP AUNZ has not reported Q1 trading 3. Includes Hong Kong and Taiwan FIRST QUARTER 2019 TRADING UPDATE 23 REVENUE LESS PASS-THROUGH COSTS GROWTH BY CATEGORY

REVENUE LESS PASS-THROUGH COSTS GROWTH¹ CATEGORIES

5% to 10% Government

0% to 5% Food, Media & Entertainment, Retail

Automotive, Computers, Drinks, Electronics, Less than 0% Financial Services, Oil, Personal Care & Drugs, Telecommunications, Travel & Airline

1. Like-for-like growth vs prior year

FIRST QUARTER 2019 TRADING UPDATE 24 EFFECTS OF CURRENCY

STERLING 2019 2018 (WEAKER)/STRONGER US$ 1.30 1.39 -6% € 1.15 1.13 2% • Currency movements accounted for 1.6% ¥ 143 151 -5% increase in revenue less Chinese Renminbi 8.8 8.9 -1% pass-through costs Brazilian Real 4.90 4.52 8% • Reflects overall weakness of £ sterling, Australian $ 1.83 1.77 3% primarily against US$ Canadian $ 1.73 1.76 -2% Indian Rupee 92 90 2% Singapore $ 1.76 1.84 -4% Russian Rouble 86 79 9% South African Rand 18.2 16.6 10%

FIRST QUARTER 2019 TRADING UPDATE 25 FIRST QUARTER 2019 TRADING UPDATE London 26 APRIL 2019

FIRST QUARTER 2019 TRADING UPDATE 26