Collaborative and dedicated to developing market-leading solutions, the OSL team are passionate about harnessing cutting edge technologies to create safer spaces. Protecting people, property and the planet through unparalleled visibility.

Meet the OSL team below.

Senior leadership team

  • Mark Legh-Smith MBE

    Chief Executive Officer and Founder

    Established the company in 2010 after serving for 18 years as an officer in the British Army. Specialised in C2ISR and air defence, and recognised with an MBE.

    Highly experienced in airspace, technology, security, and drone utilisation. Played a pivotal role in shaping the company's achievements with a proven approach that is instrumental in devising effective solutions for OSL's clients and partners in various sectors, including aviation, commercial, defence, and government.

  • Simon Trist

    Chief Operating Officer

    Joined OSL as COO in May 2023 to lead business transformation as well as commercial, operational, and technology delivery. Experienced in technology and operations leadership roles within aviation, renewable energy, and smart cities businesses, providing solutions and services which improve safety, sustainability, and situational awareness for customers.

  • Mark Lupton

    Chief Technology Officer

    Joined OSL as CTO in October 2020, formerly being CEO of a counter-drone consultancy firm. Senior management in global civil and military domains and over 30 years’ technical expertise in avionics, electro-optics, RF, electronics, and mechanical engineering.

  • Daniel Carey

    Chief Financial Officer

    Joined OSL as CFO in August 2021 with responsibility for finance and fundraising. Former M&A banker on technology, aerospace, comms and industrial transactions involving high-growth companies, listed corporates, and private equity.

  • Thomas Hoyle

    Operations Director

    Joined OSL in February 2019, responsible for civil and military customer delivery. Former British Army C2ISR expert leading deployment of surveillance equipment in hostile and harsh environments. Has led CUAS from inception.

  • Sara Evans

    Corporate and Commercial Director

    Joined OSL in February 2021 with responsibility for commercial, corporate development, governance, HR, and legal. 15 years’ commercial experience in aviation, transportation, and mining in the UK, Europe, and Asia Pacific.

  • Oana Muresan

    Head of Business Development

  • Sam Lowe

    Business Development & Marketing Manager

  • Henry Robins

    Business Development Manager

  • Vince Adams

    Senior Consultant

  • Lester Pigott

    Senior Consultant

  • Dave Robinson

    Technical Project Manager - R&D

  • Jake Kevern

    Field Services Manager


Join our team

Adept in a full suite of fields from Synthetic Training Environments and SAM Systems to Avionics and ILS support, our team is dedicated to creating safer spaces both on the ground and in the air.

For any employment enquiries, or to learn more about joining the Operational Solutions team, visit our Careers page to view our latest vacancies.