John Glencross is the co-founder and Chief Executive of Calculus Capital. See contact routes.
John Glencross is the co-founder and Chief Executive of Calculus Capital, a London-based venture capital firm he established in 1999 with Susan McDonald to invest in UK growth companies. His investment thesis targets UK-based startups and growth-stage enterprises across various sectors, with a notable focus on the film and production industry. Calculus Capital typically provides funding through tax-efficient structures like Enterprise Investment Scheme (EIS) and Venture Capital Trust (VCT) funds rather than traditional venture checks. Glencross has invested in, advised on, or negotiated over 100 transactions and serves as a director for several companies in the firm’s portfolio. Notable portfolio companies include production firms Raindog Films, Brouhaha Entertainment, Maven Screen Media, Wonderhood Studios, Home Team Content, and Riff Raff Entertainment. He maintains a bullish outlook on the UK production sector, emphasizing a “growth mindset” when evaluating these companies. While he has extensive board experience and a background in corporate finance at UBS and Phillips and Drew, no specific public writings or distinctive investment philosophies beyond
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