Leadership Team
Operators, not observers.
One Founder and two Founding Partners — each leading a discipline, each with the operating scars to prove it.
BLOCK ONE®
The Founder
Nick Proctor
Founder & CEO
Before founding Block One, Nick spent 17 years building and scaling one of the UK's leading independent energy advisory businesses, supporting complex property portfolios and infrastructure assets.
His approach combines entrepreneurial thinking with professional discipline — building a company that solves complex problems others avoid.
Beyond the UK, Nick has advised central banks on energy investment strategy in the living sector across Poland and Turkey.
Confident, modern and credible — that's not just how we work, it's how we show up. Our brand runs through everything we do, from the solutions we build to the way we present ourselves.
Our Introduction to Energy
A two-day course led by Nick — practical, no-nonsense energy training including lunch, dinner and networking. £1,250 + VAT.
View dates & book →
Founding Partner & Strategy Director
AJ is a Founding Partner at Block One specialising in energy strategy and infrastructure investment.
Prior to joining Block One as a Founding Partner, AJ spent the last 5 years advising asset managers, developers and occupiers on extracting maximum commercial value from complex, regulation-heavy environments, following 15 years in the commercial centre of John Lewis & Waitrose. He thrives on weaving genuine long-term strategy into wider business activities — blending solutions and finding ways to make sustainable choices make commercial sense. His financial modelling capability, combined with deep legislative knowledge, means clients act on their options fast.
5+
Years in executive energy strategy
£100m+
Investment cases delivered
50+
Strategic reviews led
Founding Partner & Managing Director — Energy
Mark is a Founding Partner at Block One specialising in energy procurement and market strategy.
Prior to joining Block One as a Founding Partner, Mark spent over 15 years navigating the UK energy market from the customer's side. He strips back the noise, educates clients on what actually matters, and delivers procurement outcomes aligned to business strategy — not supplier incentives. From meter installations to portfolio-wide procurement frameworks, he operates across the full energy lifecycle with deep technical knowledge of gas, electricity, water and renewables matched by commercial instinct.
15+
Years in energy procurement
£2bn+
Founders' career energy spend
100+
Portfolios optimised
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