Appendix 4D - QuoteAPI

1 Appendix 4D Half Year Ended 31 December 2017 RESULTS FOR ANNOUNCEMENT TO THE MARKET1 CONSOLIDATED 31 DECEMBER 201731 DECEMBER2016 CHANGE CHANGE$ M$ M$'M%STATUTORY RESULT Revenue and other income 2, , ( )( )Earnings before interest and tax (EBIT) before income tax expense n/m**Profit/(loss) after income tax expense attributable to members of WorleyParsons Limited ( ) n/m** EBIT margin on aggregated revenue earnings/(loss) per share (cents)* Diluted earnings/(loss) per share (cents)* ( )( ) **n/m**Basic and diluted earnings/(loss) per share for all presented periods were adjusted for equity raised in accordance with the accounting standards.

2 **n/m stands for not meaningful. CONSOLIDATED 31 DECEMBER 201731 DECEMBER 2016 CHANGECHANGE $ M$ M$'M% UNDERLYING RESULT EBIT2 EBIT margin on aggregated revenue2 Profit after income tax expense attributable to members of WorleyParsons Limited Basic earnings per share (cents) RECONCILIATION OF STATUTORY PROFIT/(LOSS) AFTER INCOME TAX EXPENSE TO UNDERLYING PROFIT AFTER INCOME TAX3 1 The International Financial Reporting Standards financial information contained within this Appendix 4D has been derived from the 31 December 2017 Interim Financial Report, which has been reviewed by Ernst & Young.

3 However, this Appendix 4D has not been reviewed. 2 Per segment note. Refer to note (G) of the Interim Financial Report. 3 The directors consider underlying profit information is important to understand the sustainable performance of the company by excluding selected significant items. CONSOLIDATED 31 DECEMBER 2017$ M31 DECEMBER 2016$ MProfit/(loss) after income tax expense attributable to members of WorleyParsons Limited ( )Add: other restructuring costs : acquisition costs : staff restructuring costs : onerous lease contracts : impairment of associate intangibles : net loss on sale of assets held for sale : net tax expense on restructuring costs ( )( ) Add: tax from changes in US tax legislation profit after income tax expense attributable to members of WorleyParsons Limited Appendix 4D Half Year Ended 31 December 2017 AGGREGATED REVENUE RESULT Aggregated revenue is defined as statutory revenue and other income plus share of revenue from associates, less procurement revenue at nil margin, pass-through revenue at nil margin1 and interest income.

4 The directors believe the disclosure of the revenue attributable to associates provides additional information in relation to the financial performance of the Group. DIVIDEND AMOUNTPER SHAREFRANKED AMOUNT PER SHARE Interim dividend (cents per share), unfranked Record date for determining entitlement to final dividend 28 February 2018 Date dividend is to be paid 26 March 2018 The directors have resolved to pay an interim dividend of cents (unfranked) per fully paid ordinary share, including exchangeable shares (31 December 2016: nil). NET ASSETS PER SHARE CONSOLIDATED 31 DECEMBER2017$30 JUNE2017$Net assets per share tangible liabilities per share ( )( )

5 Additional Appendix 4D disclosure requirements can be found in the Interim Financial Report for the half year ended 31 December 2017 issued 21 February 2018. 1 Pass- through revenue at nil-margin refers to sub-contract packages for services or materials where WorleyParsons does not receive a margin. CONSOLIDATED 31 DECEMBER201731 DECEMBER 2016

6 CHANGECHANGE $ M$ M$'M%Revenue and other income 2, , ( )( )Less: procurement revenue at nil margin (including share of revenue from associates) ( )( ) : share of revenue from associates ( )( )Less: pass-through revenue at nil margin ( )( )( )( )Less: interest income ( )( ) revenue 2, , WorABN Lev141 NorAusPh: Faxww Inalf Year EndrleyParsons LimiN 17 096 090 15el 15 1 Walker Street rth Sydney NSW stralia +61 2 8923 686: +61 2 8923 31 Deceted 8 2060 66 877 m finaember 2017 ancial7 reportWorleyPParsons Interim Finaancial Report 2018 1 2 CInteConDirStaStaStaStaNoDirIndCorWorley ParsonContenerim financialntents ..ectors reportatement of finatement of finatement of chatement of cates to the finaectors declardependent revrporate informns Interim Financial Rnts l report.

7 T ..nancial perfornancial positiohanges in equiash flows ..ancial statemration ..view report ..mation ..Report 2018 ..mance and coon ..ity ..ments .. income .. 1 .. 2 .. 3 .. 6 .. 7 .. 8 .. 9 .. 10 .. 23 .. 24 .. 26 The(Gro DIR The JohnRonAnnJagjThoEricChriCathWanAnd PRI Durmai H M In SIG On 2 SoluOpeour DurWor In Da USstra REV Themillan iattr De directors presenoup or ConsolidatRECTORS e following personn Grill (Chairman)n McNeilly retirne Templeman-Joeet (Jeet) Bindra omas Gorman - ach Fraunschiel - Listopher Haynes,herine Livingstonng Xiao Bin drew Wood (ChiefINCIPAL ACTIVITing the half year,ntenance, reliabiydrocarbons; Minerals, Metals &nfrastructure. NIFICANT CHAN27 October 2017utions) for cash cerations (MMO) s global MMO straing the period, thrleyParsons and December 2017, tS$700 million muategic growth reqVIEW OF OPERAe profit after incoion on the $ mncrease of oributable to memDirectont their report onted Entity) at thens were directors), AO red 27 October 20ones appointed - resigned 15 Deappointed 18 DecLead Independen, OBE ne, AO f Executive OfficeTIES , the principal actility support serv& Chemicals; andNGES IN THE ST7, the Group acquconsideration of service provider inategy.

8 He Group raised $ incurred of $ the Group refinanulti-currency facquirements. The nATIONS me tax expense amillion net loss afon the $2, mbers of WorleyPors rn the consolidatede end of, and duris of the Company017 d 1 November 20ecember 2017 cember 2017 t Director from 2er). tivities of the Grovices and advisoryd TATE OF AFFAIR uired 100% of the million. Wn the UK oil and g$ through million of equitynced its US$620 ility. The new debnew financing faattributable to mfter tax reported million reported arsons was $ eportd entity consistinng, the half year y from 1 July 201017 27 October 2017 oup consisted of y services to the RS e voting shares ofWith operations ingas sector. The ah issuance of a 1 raising costs.

9 Million syndicatebt structure provcility matures in members of the C in the previous cin the previous c million, and the t ng of WorleyPars ended 31 Decem17 up to the date providing engine following sectorf AFW UK Oil & Gn the UK North Sacquisition provid for 10 fully undeed debt facility thvides the Group w December 2020ompany for the hcorresponding peorresponding pe contribution to rsons Limited (Commber 2017. e of this report: eering design andrs: Gas Limited and itea, UK Integrateddes the Group witerwritten non-rehat was due to exwith additional fle. half year ended 3eriod). The result riod. UK Integratrevenue was $14 WorleyPmpany or Parent d project deliveryts controlled entd Solutions is a leth a robust entrynounceable rightxpire in August 2exibility and liquid31 December 201 was earned on ated Solutions' million.

10 Parsons Interim Fina Entity) and the ey services, includiities (referred to eading Maintenay into the UK Nortts offer for ordina2018. The new ardity to meet its w17 was $ millaggregated revenntribution to the ancial Report 2018 entities it controlng providing as UK Integratedance, Modificationth Sea and suppoary fully paid sharrangement consworking capital aion (an increase onue of $2, mGroup's after tax3 led d ns & orts ares in ists of nd of $ million, x profit 4 DIRT heund The StatAddAddAddAddAddAddLessAddUnd SUB Sincexch No oope ROU Theandamo$50 WorleyParsonRECTORS REPOe directors considderstand the suste reconciliation oftutory profit/(loss: other restructuri: acquisition costs: staff restructurin: onerous lease co: impairment of as: net loss on sale os: net tax expense.))