Group Chief Executive Officer

David Cruise

As Group CEO, David leads both Change Associates and our sister company Preos. He joined Change Associates in 2012 and co-founded Preos with Grahame Russell in 2021.

David has spent his career in transformational change in public and private sector organisations. He has worked as a principal consultant at KPMG and Hay Group, and as the in-house change lead at Marks and Spencer and Network Rail.

He has led multiple large-scale tech-enabled business transformation programmes across a breadth of functional areas including HR, procurement, finance, shared services, retail operations and supply chain. He has implemented SAP Financials, delivered significant supply chain process improvements, and secured £1.3 billion savings on a £35 billion project at Network Rail.

David has a degree in business studies.

Executive Chairman

Grahame Russell

Grahame is Executive Chairman of Change Associates Group, the parent company of Change Associates and Preos, and chairs the boards of both brands.

He founded Change Associates after a period at KPMG Consulting, working with the employed consultant model, and then as Managing Director of Penna’s consulting business, where he adopted a mixed model of employed consultants and associates.

At Change Associates, he has led high-profile organisational change, culture and leadership projects for clients as diverse as Airbus, West Midlands Police and the John Lewis Partnership. He has led culture work with the BBC over many years, and both the Respect at Work Review of 2013 following the Savile scandal and the Workplace Culture Review in 2025 drew positive comments from staff, unions and the independent chair.

In 2021, he co-founded Preos with David Cruise to help organisations get the most from their investment in Workday.

Chief Operating Officer

Helena Miles

Helena is Chief Operating Officer for Change Associates and our sister company Preos. She has spent over 30 years leading organisational change in FTSE 100 and SME businesses, and has worked as a Strategy Consultant, COO, CEO, and Transformation Director across a variety of sectors, including retail, financial services, hospitality, manufacturing, travel, and professional services.

She has deep experience in business transformation, operating model and organisation design, change management, cultural change and technology-enabled change. She has worked with several global brands including Prudential, Marks & Spencer, Co-op, Versace, Michael Kors, Jimmy Choo, Avis, Intercontinental Hotels Group, Swarovski and KPMG.

Helena has a law degree from Oxford and studied general management at Cranfield University and business & economics at Harvard. She is a SAFe® (Scaled Agile for Enterprise) Certified Agilist.

Chief Client Officer

Ben Dudley

Ben Dudley is Chief Client Officer for Change Associates and our sister company, Preos. He is responsible for client relationships, account management and client experience across both businesses, and leads the HCM, Payroll and Projects teams.

Ben joined Change Associates in 2020 as a Workday Project Manager. He helped set up Preos in 2021 and has been instrumental in its growth since then. Before that, he worked on HR systems programmes at BP, where he deployed a global reward system to 16 countries, and at Deliveroo. Over the past decade, he has led HR and ERP deployments in more than 60 countries.

Ben leads the group’s client satisfaction programme, using Net Promoter Score to track how clients rate their experience with us and help us improve.

Ben has a BSc in Computer Science and e-Business from Loughborough University.

Head of Organisation Design and Change

Charlotte Gatehouse

Charlotte Gatehouse is Head of Organisation Design & Change, leading the practice across Change Associates and our sister company, Preos. She specialises in change management, operating model, and organisation design for organisations undergoing large-scale transformation.

She has worked on several major complex programmes, including a Workday implementation across more than 90 countries, where she led the change work, designed new global HR processes, and helped phase in self-service, as well as a multi-year programme to transform the customer experience in one of the world’s largest car manufacturers. 

Charlotte is an expert user and trainer in the leading organisation analysis and design system orgvue™. Before joining Change Associates, she led the Commercial and Sales function for Zipcar in the UK. She has a first-class degree from Durham University.

Head of Payroll

Lee-ann Kilroy

Lee-ann Kilroy is Head of Payroll across Change Associates and our sister company Preos, where she leads and develops the group’s global payroll practice.

She has more than 20 years’ experience in global payroll, working across multinational environments to implement, manage, and improve payroll services for complex international workforces.

Lee-ann has held senior roles in consulting and industry, including positions at PwC and Deloitte, as well as leadership roles in global payroll operations and implementation. Her career has focused on supporting organisations operating complex international payroll environments.

Her areas of expertise include global payroll implementation and processing, payroll operations, system solutions, and developing capable payroll teams. She works with organisations to strengthen payroll functions by effectively integrating people, processes and technology.

Head of Projects

Helen Chamberlain

Helen is Head of Projects, working across Change Associates and our sister company, Preos. Her team sets the project methodology for every practice in the group, oversees delivery, and measures client satisfaction with the results.

Helen is a certified Workday Engagement Manager. Before joining Preos in 2025, she led Workday programmes as an engagement manager at Cognizant, OneSource Virtual and DXC Technology, covering implementation, integrations and post-go-live stabilisation.

She works closely with clients and delivery teams to manage risk, keep programmes moving and make clear who owns what. Her focus is predictable delivery and sound governance, and her approach is pragmatic and calm, particularly on complex, multi-workstream programmes under pressure.

Client Relationship Manager

Govind Bhalla

Govind is a change and transformation consultant with 10+ years’ experience in public and private sector organisations. He specialises in Project & Change Mangement, Business Transformation and is an expert user of Orgvue™ as a tool to support organisational analysis, design and modelling.

Govind is a PRINCE-2 qualified project professional and also holds several certifications in executive coaching.

Head of Finance

Sasha Randall

Sasha is Head of Finance for Change Associates and our sister company Preos. She leads the finance team across the group and is responsible for financial accounting, reporting, financial control, cash management, procurement and supplier management.

Sasha joined Change Associates in 2011, after six years in people consultancy as a project coordinator at Penna Plc. She has a degree in HR and Marketing.

Head of Projects

Laura Cossett

Laura is Head of Operations for Change Associates and our sister company Preos.

Since joining Preos in 2023, she has brought extensive operational management experience, with a background spanning IT, data, accounting, and office management.

Laura oversees all operations across the group, including sales operations, resource planning, IT, information security, process improvement, facilities, compliance, and risk, helping both businesses operate efficiently, securely and effectively.

She is bilingual in English and French and holds a Level 5 qualification in Business Administration and Management.

Head of Resourcing

Matt Taylor

Matt is Head of Resourcing for Change Associates and our sister business Preos. He brings more than 30 years’ experience working in consulting, formerly in contact centre and offshoring consulting and latterly in HR and change management.

He has a wealth of experience in recruitment, associate engagement and client management. Matt works alongside our business consultancy team to resource consulting projects, recruit permanent talent and build and engage our highly talented and client-centric associate community.