Leadership Team

Neil Penhall

Chief Executive Officer Close

Neil has been with the business since 1995 and is the Chief Executive of SLR Global Limited and a director of a number of its subsidiaries with overall responsibility for the strategic direction and management of the group. Prior to becoming Chief Executive in 2013, Neil was responsible for all international operations outside of the Americas (Europe, Africa and Asia-Pacific). In addition to leading and directing the strategic growth, operations and diversification of the business, Neil had previously been Managing Director of the UK business from 2001 to 2009. Neil qualified as a mining engineer and has more than 30 years of experience in international environmental
consultancy.

Peter Skinner

Chief Operating Officer Close

Peter leads on operational management and growth in SLR, providing leadership and working closely with the Regional Managers and their service line and sector teams. He has been a consultant for 35 years in geotechnics and environment, and alongside his leadership roles he has significant experience in both project management and client development.

Mark Tentori

Chief Financial Officer Close

Mark is the interim CFO of SLR and a Portfolio Partner at Charterhouse Capital Partners. He joined Charterhouse in 2016 following a career in industry where he had roles as CFO for businesses in the packaging, manufacturing and food and beverage sectors. He started his career in accounting with Price Waterhouse.

Graham Elton

Chairman Close

Graham joined SLR as Non-Executive Chairman in 2018. He ran Bain & Company’s EMEA Private Equity business from 2005-18 and is now Chairman. He is also Chairman of Pageant Media, Capital Economics and Lane, Clark and Peacock. Prior to joining Bain as a Partner he ran businesses for United Business Media and Pearson and worked at The Boston Consulting Group. Graham has a degree in Modern History from Oxford and an MBA from Harvard Business School.

Kevin Rattue

Executive Director, US Close

Kevin is responsible for operations in the US and serves as Chairman of SLR International Corporation in the US as well as being an Executive Director of SLR Global Limited. Prior to joining SLR in 2000, Kevin was the Chief Operating Officer of SECOR International, a $100 million turnover international environmental consultancy with its head office in Seattle. Previously Kevin worked as an exploration geologist and is both a registered geologist and licensed hydrogeologist.

Helen Brown

Chief HR Officer Close

Helen joined SLR in 2018 and moved onto the SLR Board in January 2020. She has executive responsibility for all aspects of the people agenda across the business globally. Helen has 30 years of experience in engineering, management consultancy and HR roles. Prior to joining SLR, Helen worked for Esso Petroleum, IBM and The Boston Consulting Group.

Helen has a Chemical Engineering degree from Imperial College, London and is a Fellow of the Chartered Institute of Personnel and Development.

Chris Mulligan

Chief Strategy Officer Close

Chris joined the SLR Board in 2020. He has executive responsibility for the growth agenda and is responsible for working with the business and its PE investor on both strategy and M&A growth plans. He is also responsible for business development, marketing and the global sector growth plans. He has 20 years’ experience in strategy, business development, digital transformation and consulting roles across the infrastructure, government and private sectors. Prior to joining SLR, Chris was a Director at Atkins for over 10 years, where he held several leadership roles, most recently as Strategy Director. He also spent 10 years at PA Consulting as a management consultant.

Peter MacKellar

Group Support Services Close

Peter joined the Board of SLR in January 2015 and is Group Support Services Director with responsibility for Health & Safety, Quality, Environment, Business Processes and Systems, IT, and Risk. Peter joined SLR from Sinclair Knight Merz (“SKM”), part of Jacobs Engineering Group Inc., where he was Chief Operating Officer, Europe, Middle East & Africa (“EMEA”). Peter gained a Civil and Structural Engineering honours degree at Sheffield University, holds a diploma with distinction in engineering management from Bristol University and is a graduate of Insead Business School in France.

Robert Leeming

Non-executive director Close

Robert is a partner at Charterhouse and was appointed to the SLR board in June 2018. He joined Charterhouse in 2007. He was formerly a partner at EPIC Private Equity, prior to which he worked on due diligence and strategy assignments at PricewaterhouseCoopers. Robert has a degree in Natural Sciences from Cambridge University and an MBA from INSEAD.

Sheena Pattni

Non-executive director Close

Sheena is an Investment Manager at Charterhouse and was appointed to the SLR board in June 2018. She joined Charterhouse in 2014 having previously spent four years at Perella Weinberg Partners in London, where she worked on M&A transactions across a number of sectors and geographies. Sheena holds a BSc in Economics from the University of Warwick.

Chris Warren

Non-executive director Close

Chris is a partner at Charterhouse and was appointed to the SLR board in June 2018. He joined Charterhouse in 2013 having previously spent ten years with ECI Partners where he completed a number of transactions across a wide range of sectors.

Prior to ECI, Chris worked at BC Partners and before that as a consultant with COBA in their Strategy and Private Equity group. Chris has a degree in PPE from Oxford University and an MBA from INSEAD.