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Our Team and Expertise

Business Team

a2B Advisory Consulting Ltd operate from our offices in London and Edinburgh, internationally with associates

who share our passion for enabling step improvement and change in organisations.

Each of our projects are unique, so we create the right team for each client engagement. 


Our team has deep international, corporate and big 4 consulting experience in designing and delivering organisation change and transformation.

organisational change management keynote speaker Peter F Gallagher,Peter F Gallagher Change Management Expert,,, The Leadership of Change – Volume 1 - Fables, the change explosion, The Leadership of Change – Volume 2 - Change Pocket Guide, the Leadership of Change – Volume 3 Leadership Solutions, change, The Leadership of Change – Volume 1-3, Change Leadership, Peter F Gallagher  Author, Peter F Gallagher Speaker, Enabling the leadership of change
  • Peter leads a2B Advisory Consulting Ltd in both London and Edinburgh

  • Peter is an organisational change management thought leader and expert

  • Peter has worked as a consultant and executive for over 30 years

  • Peter is the Author of the Leadership of Change® Volumes 1 - 7 & A - C

  • Peter is also a organisational change management keynote speaker


Peter is a Change Management Expert, International Speaker, Author and Leadership Alignment Coach and Trusted Adviser to C-suites.

Peter speaks on change management, change leadership and the benefits of change management gamification. He has a proven track record of complex change and project delivery in multi-disciplinary environments for the world’s largest and most successful organisations. He has Big Four external consulting experience, as well as internal and commercial consulting experience, working in over twenty-five countries over a thirty-year career. Companies he has worked for include: EY, Shell, NCR and Bombardier Aerospace and has held senior roles in industry and has boardroom experience as a NED. His clients include organisations such as ADNOC, Boeing, GE, Rolls Royce and Saudi Aramco.

As a speaker, Peter has presented strategic transformations leading practice to Government entities, CEO audiences globally and at professional membership conference. He has led large change management communications events (200+ employees) and developed change leadership alignment processes, change concepts, assessments, frameworks, models and tools.

Peter has an MBA (Distinction) from the Robert Gordon University. He is an American Society of Quality (ASQ) Certified Manager of Quality, a Certified Change Management Professional™ with the Association of Change Management Professionals (ACMP) and holds three certifications from the Project Management Institute (PMI). He is also a Lean Six Sigma Master Black Belt. More about Peter.

Leadership of Change® Publications by Peter Gallagher

Change Management Body of Knowledge (CMBoK) Volumes 1, 2, 3, 4, 5, 6, 7, A, B, & C

CMBoK, Change Management Body of Knowledge, Change Management Handbook, Change Management Books, Leadership of Change Volumes 1 2 3 A B C 4 5 6 7, Change Management Fables, Change Management Pocket Guide, Change Management Gamification Leadership, Change Management Gamification Adoption, Change Management Gamification Behaviour, Change Management Leadership, Change Management Adoption, Change Management Behaviour, Change Management Sponsorship,

Lesley Thomson

a2B Advisory Consulting Associate Lesley Thompson
  • Associate

  • Expertise: Human Resources


Lesley's experience in Human Resources spans a career of 25 years working internationally with blue chip organisations. Lesley worked for 20 years in Hewlett Packard, later Agilent Technologies, a company spun off from HP, then started working as an Independent Consultant before moving into maritime as an HR Director for 7 years. Accomplished and versatile, she also is known for driving people strategies that deliver business results in all phases of the organisational lifecycle.


Lesley is a member of the Chartered Institute of Personnel Development (CIPD) UK and has accreditations as an Predictive Index Analyst and to perform a Hays Job Evaluation. Other specialisms include Strategic and Operational Management, TUPE, Acquisitions, Divestments and Transitions, Restructuring, Performance Management, Succession Planning and Strategic Resource Management.

Our Team Inner_about
Our Team Inner_about

Ian Jones

a2B Advisory Consulting Associate Ian Jones
  • Associate

  • Expertise: Organisational Effectiveness


Ian has more than 20 years’ experience in management and consulting, working with HR functions and business leaders on Change Management, Organisational Development and Leadership Development. He brings practical experience to clients and a set of skills that span the lifecycle of change interventions. From initial diagnostics that identify and clarify the case for change, through to facilitation, change management and successful sustainable implementations.


Ian works closely with clients to design and deliver interventions that enable successful change. By increasing collaboration, creating more effective partnerships and enabling better business decisions he helps leaders lower risk, speed up delivery, reduce cost and deliver more sustainable outcomes. Having worked globally as a business leader, Ian appreciates the challenges facing leaders who are stewarding organisations through change. From his work as a consultant, he understands the role of the consultant in enabling successful change that delivers promised value. Ian is also a coach to HR and business leaders, helping them to navigate the difficult challenges that change in their organisation can bring.

Les Thomson

a2B Advisory Consulting Les Thomson - Associate
  • Associate

  • Expertise: Asset Management and Leadership Coaching


Les is a highly experienced, senior oil and gas industry Asset and Technical Executive with an extensive track record of onshore and offshore delivery. He has well-developed leadership, consulting and technical skills, which have been demonstrated by measurable transformation and performance improvement programmes in various production and energy process environments. Areas of expertise include operations, reliability and maintenance, people development, innovative delivery of high value projects and successful leadership of challenging joint venture partnerships. 


He is a practical person with a deep knowledge of what it takes to be a successful leader of oil and gas businesses. Les has a track record of getting the best out of people, their behaviour, systems and processes. With a focus on utilising an open, engaging leadership style, he has a keen nose for getting to the fundamental issues that impact the delivery of business performance.

Ignacio Tejedor Carreras

a2B Advisory Consulting Associate Ignacio Tejedor Carreras
  • Associate

  • Expertise: Project Management, Controls and Governance


Ignacio has 13 years of international experience working in the Oil & Gas industry, 8 years in an expat position in China, firstly as Process and Project Engineer and currently in Project Management. His experience has been developed in Energy, Petrochemical and Refining Projects, with a strong background in Engineering, Procurement, Manufacturing and Commissioning. 


Ignacio has a Master's of Business Administration (MBA), Oil and Gas Management from Robert Gordon University (RGU). He is a Certified Project Management Professional (PMP) with the PMI and also holds a MEng in Chemical Engineering from Universidad Rey Juan Carlos, Spain

Hayley Jaffrey

a2B Advisory Consulting Associate Hayley Jaffrey
  • Associate

  • Expertise: GDPR and Quality Consultant


Hayley has 20 years of experience in Senior Quality and Governance Leader roles across different sectors, including Oil & Gas, Telecoms, Local Authority and Healthcare. She has a proven track record in delivering Governance Programmes & Systems, including Business Transformation and Operational Excellence projects. She is our GDPR Consultant and also support clients on Quality, Governance and HSE.


Hayley is a chartered member of The Chartered Quality Institute, a member of the International Association of Privacy Professionals (Certified CIPP-E), a Certified RCA Leader/Instructor, a Lean Six Sigma Black Belt and ISO Auditor.

Sarah L Gallagher

Sarah L Gallagher Change Management Consultant, a2B Consulting, Peter F Gallagher,
  • Sarah leads a2B Consulting Operations 

  • Resourcing and Client Relations

Most recently, Sarah has worked for PA Consulting in the UK after working in the Middle East for nearly five years. In Abu Dhabi, Sarah worked as an Account Manager for a major organisation that offered local partnership options for international businesses looking to enter the Middle East market with their products and services. Prior to this, Sarah worked as an internal Communications Consultant for Royal Dutch Shell, leading communications and community activities for two Gas Plants in Scotland. Sarah’s work experience includes regional development, energy, recruitment and education.


Sarah is a highly personable and efficient individual with broad international industry experience having worked for the world’s largest and most successful organisations in 10 plus countries. Working across many countries and cultures has allowed Sarah to develop strong interpersonal and communication skills. She is experienced and proficient in helping individuals and teams to cope with transitions, improvement and changes in their working lives. 

We welcome relationships with independent consultants, speakers, entrepreneurs, business schools and other consultancies. 

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