Dr. John Glen was a senior lecturer in Economics and latterly Director of the Centre for Customised Executive Education CCED at Cranfield School of Management in the UK. After 18 years at Cranfield John retired from the School at the end of September 2017 and is now a visiting fellow at Cranfield. 

John has extensive experience as a facilitator of top teams working with talented leaders on innovation and growth strategies in 40+ countries and from many more cultures. His focus is on top team deliberations around strategy, innovation, operating models, leadership and culture to promote growth and strategic value for shareholders.

John has worked extensively with the Kuehne and Nagel organisation for the past 10 years. Currently, he advises the boards of Kuehne and Nagel UK, Kuehne and Nagel South and Central America, and has worked on a wide range of engagements across Europe with Kuehne and Nagel. John has also advised a number of regional boards of global orgainsations including G4S Africa and DP World (Europe).

As of November 1st 2012 John was retained by CIPS as their economic advisor. In that role, John is speaking widely to procurement and supply chain practitioners about the impact of Brexit. John is also a member of the Brexit impact group that reports to the National manager of Kuehne and Nagel UK.

John appears regularly on BBC radio and television commenting on the UK macro-economy, the UK banking industry and the economics and finance of sport.

John teaches on a number of international MBA programmes in Germany, Belgium, South Africa and the Netherlands and has delivered executive education programmes to a large portfolio of corporate clients including Kuehne and Nagel, Jaguar LandRover, EMC2, Sony, Vodafone, REXAM,  Pfizer, BAE Systems, Trust Re, Etisalat, ARI, HSBC and SABIC.

Maxfield works at the intersection of sustainability, procurement, and system change, helping turn ambition into operating reality across global supply chains.

As Global Head of Sustainability at the Chartered Institute of Procurement & Supply (CIPS), Maxfield leads the organisation’s global agenda to set the benchmark for sustainable procurement and supply. His focus is on strengthening the standards, skills, and incentives that shape how procurement decisions are made—from the classroom to the boardroom—so the profession is equipped to deliver consistently and at scale.

Procurement is no longer a support function. It is one of the most powerful levers organisations have to manage risk, meet climate and nature commitments, uphold human rights, and create long-term value. When procurement works, sustainability becomes integral to everyday commercial decisions rather than an add-on.

What drives Maxfield's work is a simple belief: sustainability only delivers when it becomes embedded in professional norms, commercial decisions, and institutional expectations — creating the conditions for a just transition to a net-zero, nature-positive economy. His focus is on building the institutions, professions, and markets that make sustainable value creation the default, not the exception.

Maxfield is particularly interested in how professions evolve, how standards shape behaviour, and how organisations build the capability to deliver value and operate ethically in a rapidly changing landscape.

Maxfield is a regular speaker on sustainable procurement, professional standards, and value creation, engaging with leaders across business, policy, and the wider sustainability ecosystem.