Longwall Venture Partners is an Oxfordshire based venture capital firm investing in technology companies in the United Kingdom. David Denny, Matthew Frohn, and Michael Penington co-founded the firm in 2011. It seeks to invest up to £5 million over time in early-stage companies in the healthcare, science, and engineering sector. It focuses on companies involved in life science, healthcare, security, media, business software, engineering, and technology. Its portfolio includes companies like Acunu, Diamond Microwave, Meciria, Organox, Arquer Diagnostics, Oxford Space Systems, and Bio Fidelity.