AMEC plc Annual General Meeting 2011

1. AMEC plcAnnual General Meeting 2011 5 May 2011

2. Important information Certain statements in this presentation are forward looking statements. By their nature, forward looking statements involve a number of risks, uncertainties or assumptions that could cause actual results or events to differ materially from those expressed or implied by the forward looking statements. These risks, uncertainties or assumptions could adversely affect the outcome and financial effects of the plans and events described herein. Forward looking statements contained in this presentation regarding past trends or activities should not be taken as representation that such trends or activities will continue in the future. You should not place undue reliance on forward looking statements, which apply only as of the date of this presentation. This presentation does not constitute or form part of any offer or invitation to sell, or any solicitation of any offer to purchase any shares in the Company, nor shall it or any part of it or the fact of its distribution form the basis of, or be relied on in connection with, any contract or commitment or investment decisions relating thereto, nor does it constitute a recommendation regarding the shares of the Company. Past performance cannot be relied upon as a guide to future performance.

3. Financial highlightsStrong 2010 performance Revenue 2,951 2,539 +16% EBITA* 272 208 +30% Operating cash flow** 227 266 -15% Profit before tax* 280 216 +30% Earnings per share*** 62.5p 46.9p +33% Dividend per share 26.5p 17.7p +50% Employee numbers 21,90720,762+6% Order book 3.1bn 3.2bn -1% £ million 2009 2010 9.2% EBITA margin – up 100 bps * Before amortisation but including joint venture profit before tax ** Cash generated from operations before exceptional items and discontinued operations, legacy settlements and pension payments in excess of amounts recognised in the income statement, and including dividends received from joint ventures *** Diluted for continuing operations, before amortisation and exceptional items Strategy Customers People Growth One AMEC Financials

4. Delivering services across high-growth sectors Delivering Vision 2015 Strategy • Focused on delivering similar high-value services, across the asset life cycle, in select core sectors • Services: consulting, engineering, project management • Sectors: oil & gas, minerals & metals, clean energy, environment & water • Well positioned and growing in high-growth sectors Revenue by sector (2010) Oil & Gas Minerals & Metals Clean Energy Environmental & Water Government services: 6% Transport/Infrastructure: 3% Industrial/Commercial: 3% Water/Municipal: 3% Oil & Gas: 24% Transmission & Distribution: 4% Power: 8% Renewables / Bioprocess: 9% Nuclear*: 9% Unconventional Oil & Gas: 20% Minerals & Metals: 11% * Does not include the ‘equity accounted’ Sellafield decommissioning contract Financials Strategy Customers People Growth One AMEC

5. Increased industry investment in core markets Delivering Vision 2015 Well positioned in high-growth sectors • AMEC’s 11 core sectors* Clean Energy Oil & Gas • Oil demand forecast to increase from 84 mb/d (2009) to 99 mb/d (2035)which in turn requires 9bbl/yr of new discoveries** Worldwide electricity production forecast to increase from 2,731 TWh (2008) to 4,900TWh (2015)** • Nuclear (5-7%) • Renewables/bioprocess (8-10%) • Power (3-5%) • Transmission & Distribution (4-6%) • Oil & Gas (8-10%) • Unconventional (5-7%) Minerals & Metals Environmental & Water Growth in environmental legislation – increasing use of brownfield sites, exploration of environmentally sensitive regions, and recognition of water issues • Increased demand for commodities following global underinvestment • Water/Municipal (5-6%) • Transport/Infrastructure (4-5%) • Government services (3-5%) • Industrial/Commercial (3-6%) • Minerals & Metals (6-8%) * AMEC’s estimated growth potential in our accessible markets (CAGR 2010-2015), based on mid-cycle assumption; **IEA – NB: see interim results for further details Financials Strategy Customers People Growth One AMEC

6. Delivering Vision 2015Strengthened customer relationships Consistent high quality service delivery Existing customers • Continuing focus on building strategic customer relationships • Existing customers • New customers • AMEC’s key capabilities • Technical excellence • Relationship driven • Consistent delivery New customers 2010 Financials Strategy Customers People Growth One AMEC

7. Delivering Vision 2015Acceleration in order intake Order intake up >25% since 2009 • Recently announced contracts • ConocoPhillips (detailed engineering, procurement and hook-up for Judy and Jasmine fields, UK) • BP (global onshore agreement) • Maersk (modifications to Curlew FPSO, UK) • Apache (2-year modification to Forties Alpha platform, UK) • BG Group* (3-year services contract for all BG’s North Sea assets, UK) • Eastern Star Gas* (Coal seam methane project, Australia) • Crazy Horse Resources (Taysan copper gold project, Philippines) • Providence Resources (Ulysses salt cavern gas storage project, UK) • Compañía Minera del Pacífico S.A.*(Cerro Negro iron ore project, Chile) • Ivanhoe (Oyu Tolgoi copper gold underground mine, Mongolia) • National Grid (Carbon capture and storage project Longannet, UK) • INEOSBio (EPC services for commercial scale bio ethanol facility, US) • AFCEE (Air Force LEED renovation) • Northumbrian Water (renewal of 10-year framework agreement, UK) Oil & Gas Minerals & Metals Clean Energy Environmental & Water * Announced Feb 2011 Financials Strategy Customers People Growth One AMEC

8. Delivering Vision 2015Investing in people Attract, develop, retain the best people • Employee strategy underpins consistent, high quality customer service • Attract best talent • Equip with tools and processes • Develop the right skills and experience • Retain the best people • Increasingly important as industry investment drives up demand for professional engineers, project managers and consultants Financials Strategy Customers People Growth One AMEC

9. Delivering Vision 2015Enhancing capability Growth – organic and via strategic acquisitions • Building and enhancing capabilities via organic growth • Strengthened leading position in UK nuclear • Tier 1 EDF nuclear new build • Market entry to underground mining • Oyu Tolgoi (Mongolia) - leveraging surface mining reputation • And via acquisition • Subsea engineering - S2V Consulting: the first of a series of ‘subsea’ bolt-on acquisitions • Water - Entec Holdings Ltd: added 700 employees in the UK Oil & Gas Minerals & Metals Clean Energy Environmental & Water Financials Strategy Customers People Growth One AMEC

10. Focused on growth regions and established markets Delivering Vision 2015Expanding geographic footprint • Continued growth in established markets, particularly • Europe • North America • Upsizing in select regions • Australasia • South America • Middle East Geographic expansion Current locations Growth regions Established markets Financials Strategy Customers People Growth One AMEC

11. Delivering Vision 2015Expanded geographic footprint - Australia New capabilities, sectors, customers – strengthened position • ‘Aquenta Consulting’ • (Currie & Brown (Aus); BurmanGriffiths) • Cost, contract & commercial management consultancy • Oil & gas, mining, utilities, transport • Customers: BHP Billiton Minerva, BP, Chevron, ExxonMobil, PNG, Rio Tinto, Woodside • Locations: Brisbane, Adelaide, Gold Coast, Melbourne, Perth, Sydney • GRD Minproc • Engineering and project development • Mining: copper, gold, uranium, nickel and iron • Customers: PanAust Ltd, Gindalbie Metals, Citic Pacific Mining / MCC • Locations: Perth (+Africa, South America) 2010 AMEC employees c. 1,300 (incl. 300 in JV) Brisbane Gold Coast Sydney Perth Adelaide Melbourne • S2V Consulting • Front-end consulting: field development, conceptual screening, project assurance services • O&G, subsea engineering, pipelines • Customers: Woodside, QGC, INPEX, Santos, Chevron, Apache, ENI, OMV • Locations: Perth • Zektingroup* • Specialist engineering consultancy • Oil & gas, CSM, bioprocess • Customers: Eastern Star Gas, ALG Energy, QGC, Anglo Coal (Aus), BOC Gases • Locations: Melbourne, Brisbane Oil & Gas Minerals & Metals Clean Energy Environmental & Water *Acquired February 2011 Financials Strategy Customers People Growth One AMEC

12. Delivering Vision 2015One AMEC Secure platform for continued growth One AMEC • Customer-focused • Operational management structure • Skilled people • Integrated activity • Tools & processes • Enhanced efficiency • Cost effective • Strategy-focused One AMEC Geographic footprint Customer relationships Enhanced capabilities Integrated structure Operational Excellence Step Change Financials Strategy Customers People Growth One AMEC

13. Delivering Vision 2015 Focus on growth • Enhancing our capabilities • Enhancing our geographic footprint • Integrated approach Capital Structure • More efficient capital structure • Increased acquisitions • Shareholder distributions Employees • Strengthening our people • Harmonising tools and processes Customers, people, growth – One AMEC >100p EPS* • * Diluted EPS 2015 Financials Customers People Growth One AMEC Introduction

14. AMEC plcAnnual General Meeting 2011 Questions

15. AMEC share price performance Sept 2006 – April 2011 AMEC performance vs FTSE 100 and Sector