David Lowden

Board Chair & Nomination Chair

David Lowden

Board Chair & Nomination Chair

Joined - October 2021

Relevant skills and experience
  • Industrial and Distribution
  • Finance and Risk Management
  • Operations
  • Strategy
  • M&A Activities
  • International Business
Current external appointments
  • Senior Independent Director, Morgan Sindall plc
  • Chair, Capita PLC
Past appointments
  • Chair, PageGroup plc
  • Senior Independent Director, Berendsen plc
  • Chair, Huntsworth plc
  • Non-Executive Director, William Hill plc and Cable & Wireless Worldwide plc
  • Chief Executive, Taylor Nelson Sofres
Committee Membership
  • Nomination (Chair)
  • Remuneration

 

Johnny Thomson

Chief Executive Officer

Johnny Thomson

Chief Executive Officer

Joined - February 2019

Relevant skills and experience
  • Industrial, Distribution and Services
  • Finance and Risk Management
  • Operations and Customer Service
  • Strategy
  • M&A Activities
  • International Business
Current external appointments
  • Senior Advisor to TDR Capital LLP (TDR) and a member of the Strategic Committee of TDR’s portfolio company, Applus+
Past appointments
  • Group Finance Director, Compass Group PLC
  • Regional Managing Director, Latin America, Compass Group PLC

Wilson Ng

Acting Chief Financial Officer

Wilson Ng

Acting Chief Financial Officer

Appointed - August 2025 (with the
Group since September 2022)

Relevant skills and experience
  • Manufacturing and Industrial Products
  • Finance and Risk Management
  • Strategy
  • Operational Finance
  • M&A Activities
  • International Business
Current external appointments
  • None
Past appointments
  • Divisional Finance Director (Steam Specialities), Spirax Group plc
  • VP Finance, GKN plc

Katie Bickerstaffe

Senior Independent Director

Katie Bickerstaffe

Senior Independent Director

Joined - October 2024

Relevant skills and experience
  • Industrial, Service, Manufacturing and Healthcare
  • Sales / Marketing
  • Operations / Customer Service
  • Strategy
  • M&A Activities
  • Organisational Development
  • Sustainability
Current external appointments
  • Non-Executive Director, J Sainsbury plc
  • Non-Executive Director & Chair of Remuneration Committee, Barratt Redrow plc
  • Non-Executive Director, Aberdeen Group plc
  • Senior Independent Director, England and Wales Cricket Board
  • Non-Executive Director, The Royal Marsden NHS Foundation Trust
  • Director, Flocon de Neige Ltd

 

Past appointments
  • Co-Chief Executive Officer, Marks & Spencer Group Plc
  • Executive Chair, SSE Energy Services
  • CEO Designate, SSE Plc
  • CEO UK & Ireland, Dixons Carphone Plc
Committee Membership
  • Audit
  • Remuneration
  • Nomination

Janice Stipp

Independent Non-Executive Director & Audit Chair

Janice Stipp

Independent Non-Executive Director & Audit Chair

Joined – January 2024

Relevant Skills and Experience
  • Industrial and Services
  • Finance and Risk Management
  • Strategy
  • M&A Activities
  • International Business
  • Organisational Development
Current external appointments
  • Independent Board Member and Audit Committee Chair, ArcBest Corporation
  • Non-Executive Director & Audit Committee Chair, Rotork Plc
  • Board Member, Michigan State University Research Foundation
Past appointments
  • Independent Board Member, Sappi Ltd
  • Independent Board Member, Commercial Vehicle Group Inc
  • Independent Board Member, NN Inc
  • Independent Board Member, PlyGem Holdings Inc
Committee Membership
  • Audit (Chair)
  • Nomination

Jennifer Ward

Independent Non-Executive Director & Remuneration Chair

Jennifer Ward

Independent Non-Executive Director & Remuneration Chair

Joined - June 2023

Relevant skills and experience
  • Industrial, Services and Healthcare
  • Customer Service
  • Sales / Marketing
  • International business
  • Organisational Development
  • Diversity, Equity & Inclusion
  • HR / People
Current external appointments
  • Executive Director and Chief Talent, Culture and Communications Executive, Halma Plc
Past appointments
  • Senior Director, Human Resources, PayPal Inc.
  • SVP Learning & Leadership Development, Bank of America
Committee Membership
  • Remuneration (Chair)
  • Nomination

 

Dean Finch

Independent Non-Executive Director

Dean Finch

Independent Non-Executive Director

Joined - May 2021

Relevant skills and experience
  • Industrial and Services
  • Financial and Risk Management
  • Operations and Customer Service
  • Health & Safety
  • M&A and Financing
  • Strategy
  • International Business
Current external appointments
  • Group Chief Executive, Persimmon PLC
  • Non-Executive Director, Home Builders Federation
Past appointments
  • Chief Executive Officer, National Express Group plc
  • Group Chief Executive, Tube Lines
  • Group Finance Director & Group Chief Operating Officer, FirstGroup plc
Committee Membership
  • Audit
  • Nomination

 

Geraldine Huse

Independent Non-Executive Director

Geraldine Huse

Independent Non-Executive Director

Joined - January 2020

Relevant skills and experience
  • Industrial, Distribution, Manufacturing and Healthcare
  • Customer Service
  • Sales / Marketing
  • International Business
  • Organisational Development
  • Diversity, Equity & Inclusion
  • Sustainability
Current external appointments
  • None
Past appointments
  • President, P&G Canada
  • Chief Executive Officer, P&G Central Europe
  • Chair of the Institute of Grocery Distribution
Committee Membership
  • Nomination
  • Remuneration

Ian El-Mokadem

Independent Non-Executive Director

Ian El-Mokadem

Independent Non-Executive Director

Joined - January 2025

Relevant skills and experience
  • Industrial and Services
  • Finance and Risk Management
  • International Business
  • Operations
  • Health & Safety
  • M&A Activities
  • Strategy
  • Technology-enabled business transformation
Current external appointments
  • Non-Executive Director, Serco Group plc
  • Director, Roegate Consulting Ltd 
  • Non-Executive Director, United Utilities Group plc
  • Senior Advisor, Industrial & Business Services group, Warburg Pincus LLC
Past appointments
  • Chief Executive, RWS Holdings plc
  • Chief Executive, V.Group for Advent International
  • Chief Executive, Exova Group plc
Committee Membership
  • Nomination
  • Audit

Anna Lawrence

Group General Counsel & Company Secretary

Anna Lawrence

Group General Counsel & Company Secretary

Anna joined Diploma in May 2025 as Group General Counsel & Company Secretary. Prior to joining Diploma, Anna held senior legal positions at Rolls-Royce plc, Johnson Matthey plc and Kingfisher plc. Most recently, she was Group General Counsel & Company Secretary at Elementis plc. She trained and qualified as a solicitor at Allen & Overy (now A&O Shearman).