Henri-Thierry Toutounji re-joins OC&C Strategy Consultants as Partner in B2B Practice

London, 11 November 2025 – OC&C Strategy Consultants is delighted to announce that Henri-Thierry Toutounji has re-joined the firm as a Partner in the B2B Practice, based in London. Henri will focus on supporting corporates and investors in industries being reshaped by climate change and broader sustainability trends – including energy transition and circular business models.

Henri first joined OC&C in 2005 and spent more than 17 years with the firm, developing his career across the Paris and London offices and becoming a well-established and highly regarded Partner. Motivated by a deep interest in the role business can play in the sustainability transition, he left to pursue a Master’s in Sustainability, Entrepreneurship and Technology, and to advise entrepreneurs in scale-ups in this field.

Now returning to OC&C, Henri brings valuable insight and energy at a time when environmental and sustainability considerations are becoming an increasingly important part of many clients’ strategic agendas. His perspective will strengthen how the firm supports business leaders in navigating change and building sustainable and resilient growth.

Will Hayllar, Global Managing Partner at OC&C, commented:

“We’re thrilled to welcome Henri back to OC&C. His return underscores our position as the best home for the best strategy talent – a place people want to return to because of the quality of the work, the culture, and the impact we make with clients.

Henri’s deep expertise in sustainability will strengthen how we help clients pursue resilient, responsible growth, while aligning closely with our own commitment as a certified B Corp™ to operate responsibly and for the long term.”

Henri-Thierry Toutounji added:

“I’m delighted to be re-joining OC&C at such a pivotal time for our clients, where sustainability – from climate mitigation and adaptation, to accounting for nature and biodiversity -, is becoming a critical ingredient of how businesses and communities manage risk, control cost and fuel resilient growth.

I’m excited to help leaders translate these imperatives into strategic advantage and resilient business models. OC&C’s analytical rigour, collaborative culture and long-term mindset make it a great platform to do so, and I’m proud to return and contribute to the firm’s continued evolution as a certified B Corp.”