John Miller
Chief Financial Officer
John Miller is a portfolio CFO and adviser to high-growth start-ups, helping management teams turn financial data into better decisions.
John works with Grafton Capital, as well as our portfolio companies and some other high growth businesses. He brings commercial discipline and clarity to scaling teams, with experience across fundraising, forecasting and financial strategy.
John is a keen golfer and a strong contender for the 2026 Grafton Open, to be held in Spain.
