Longwall Ventures

Investment decisions are made by the partnership, led by managing partners David Denny and Matthew Frohn, with partner Michael Penington. All three have direct operating experience inside Oxford University Innovation, the university's technology transfer office, prior to founding Longwall in 2010.

The firm's deal flow is overwhelmingly sourced from UK research universities and government laboratories. The partners' background inside Oxford's tech-transfer office — and the firm's proximity to the Harwell Science and Innovation Campus — provides early visibility into spinouts that have not yet engaged with traditional venture capital. Longwall also works directly with the Science and Technology Facilities Council to identify commercial opportunities emerging from national labs.

Longwall typically leads or co-leads pre-seed and seed rounds, writing first cheques into companies that often have no prior institutional venture backing. The firm structures itself to be the first professional investor into a university spinout, building the syndicate around that initial commitment. In later rounds, Longwall follows pro-rata where its reserves allow, but its core posture is to create the deal rather than join one.

The firm targets pre-seed and seed stages, writing cheques typically between £250,000 and £2 million. These companies are frequently pre-revenue and may still be refining laboratory-scale proof of concept. Longwall's capital is structured to fund the translation from academic research into a commercial minimum viable product, bridging the gap before institutional Series A investors engage.

Longwall does not invest in consumer internet, pure-play software-as-a-service, or financial technology unless there is an underlying hard-science or engineering moat. The firm's mandate requires a defensible link to university research, which fundamentally excludes asset-light consumer businesses and most B2B software startups. Life sciences, advanced materials, robotics, and clean-energy hardware form the bulk of the portfolio.

Longwall has previously raised capital through the Enterprise Capital Funds programme, a British Business Bank initiative that matches government funding with private commitments to back early-stage UK technology companies. This structure allows Longwall to deploy patient government-linked capital alongside private limited partners, a funding mix that aligns with the firm's long-duration, research-heavy investment profile.

The firm maintains reserves for follow-on investments in its highest-conviction portfolio companies, aiming to participate pro-rata in subsequent rounds. However, Longwall operates on a fund structure, not an evergreen vehicle, so reserve allocation is finite and decided by the partnership on a case-by-case basis. The firm frequently co-invests alongside later-stage funds such as Oxford Sciences Innovation for companies graduating out of its initial seed position.