The Executive Team

The Executive Team


Justin Butler

Justin Butler, Ph.D. Chief Executive Officer

Justin is the CEO of Ambiental. He has over 15 years of experience innovating and commercialising digital mapping and software / data products, as well as delivering and managing complex risk mapping and modelling projects internationally. Justin is responsible for charting the strategic direction of the company, in support of our international growth plans. Overseeing the commercial and technical roadmaps for Ambiental’s ever-expanding suite of disruptive predictive analytics tools, probabilistic models, high-resolution mapping & forecasting products and data / software services, Justin has a passion for technical innovation and is a regular speaker at international conferences and trade shows.
David Martin

David Martin, Chief Technical Officer

David leads our teams of catastrophe modellers, software developers, and Geographical Information Systems (GIS) specialists in producing, and maintaining Ambiental’s industry-leading geospatial data and software products. David’s expertise include flood risk modelling, exposure / loss / impact modelling, GIS, geospatial systems and process-chain optimisation. Being responsible for Ambiental’s technical strategy, David designs unique predictive analytics tools, which power our risk mapping, modelling, and forecasting products. Overseeing our Artificial Intelligence (AI), R&D and modelling teams, David also supports the commercialisation of Ambiental’s intellectual property within the insurance, water utility and international government sectors in line with industry best practice. He loves working closely with our customers, tailoring solutions to meet their specific requirements whilst delivering valuable business insights.
George Longfoot

George Longfoot, Chief Operating Officer

George is a highly experienced digital professional with a technical, operations and senior management background who thrives on developing people, process and product. His skills base spans across program & project delivery, business development, customer relationship and team management. George ensures delivery excellence through strong project and team management, and supports clients’ digital transformation programmes through tried-and-tested methodologies. His background includes building a European broadband business, growing a software development and virtual reality (VR) business, and has established a loyal client base within the digital, publishing and insurance / maritime data industries. George thrives on building happy teams and strengthening company culture, whilst embedding innovation in to our customers’ businesses.
Bryan Wilsher

Bryan Wilsher, Chief Financial Officer

Bryan is a non executive director of Ambiental and is responsible for overseeing finance, commercial matters and corporate governance. With over 40 years experience in advising high growth tech companies, he brings a wealth of knowledge in relation to financial / strategic planning and engagement with institutional investors.
Michael Bartholomeusz

Michael Bartholomeusz, Expert Advisory Panel

Michael adds a customer perspective on Ambiental’s Expert Advisory Panel having recently been one of the executive team which launched Flood Re in the UK as its Chief Risk Officer. He has over 35 years experience in financial services and is now a non executive director of a few firms in the sector. He is a regular conference speaker on risk management and governance matters.
Katherine Courtney

Katherine Courtney, Expert Advisory Panel

Katherine is a strategic advisor to innovative tech businesses. She has more than 25 years experience devising and executing mission critical strategy and developing new markets, products, services and ventures. Her career has spanned both the private sector – developing new global products and commercial partnerships for Cable & Wireless, BT and a series of other international companies – and public – leading a number of flagship technology-enabled transformation programmes for UK government. In her last public sector role, as CEO of the UK Space Agency, she led government strategy to grow the UK’s space industry – opening the UK market to commercial Satellite launch and investing €1.4bn in R&D funding.