Chief Executive Officer
Jason Calder MBE
Former Army Officer with 23 years of service, including defence procurement within a £1.6 billion portfolio. Also brings 13 years at BNY and a £36 billion UK pension fund.
About us
Backing dual-use technologies and national resilience capabilities.
Quarterstaff Capital is a defence-focused investment and advisory firm giving investors access to high-quality opportunities positioned for long-term growth across defence, security and aerospace markets.
Investment philosophy
Strengthening security, resilience and sovereign capability.
Modern defence is no longer only about frontline platforms. It includes critical infrastructure, energy systems, communications networks and supply chains.
This shift expands the opportunity set into cyber security, secure communications, energy resilience and advanced manufacturing.
Dual-use innovation in AI, autonomy, space systems, advanced materials and cyber capabilities serves both military and commercial markets, creating scalable businesses with diversified demand and strong policy tailwinds.
The model
Specialist expertise, curated deal flow and a global network.
Quarterstaff Capital combines defence market insight, strategic partnerships and an established pipeline of defence and national security SMEs. The firm is partnered with Reframe Capital for go-to-market and fundraising services.
Leadership
Specialists across defence, national security, procurement and financial services.
Chief Strategy Officer
Chris Bartley
Former Royal Marines and Special Mission Unit officer with 38 years of experience. Strategic-level leader and expert in capability requirements.
Chief Operations Officer
John-Paul Preston
Founding member of Gresham House plc and Head of M&A. 21 years of experience as a COO, CLO and private equity professional.
Strategic advisory network
Senior experience across intelligence, government and allied defence.
- Lon AugustenborgFormer CIA executive with 35 years of experience in demanding national security environments. Founder and CEO of Novus Intelligence LLC.
- James WigginsNational security executive with 30 years of successful operations leadership across complex, high-pressure environments.
- Bradly BishopFormer CIA executive and operations officer with 30 years of leadership experience in intelligence, security and strategic operations.
- Rt Hon Anne-Marie TrevelyanFormer senior UK government minister with extensive experience in trade, defence, energy and international development.
- Sir Nick BortonFormer Lieutenant General who commanded at every level up to Corps and in NATO headquarters, and remains an adviser in multinational environments.
Regulatory position
Important information
Quarterstaff Capital Limited is not authorised or regulated by the Financial Conduct Authority or any other financial services regulator. Nothing provided by Quarterstaff Capital constitutes investment advice, financial advice or a recommendation to engage in investment activity. Where regulated activity is required, Quarterstaff Capital works with appropriately authorised partners.