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Owlstone raises £22m in the first close of its Series E round to advance its breath-based diagnostics device

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Owlstone
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Billy Boyle; David Ruiz-Alonso
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£22m
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Cambridge, United Kingdom
Jan 15, 2025

Owlstone the global leader in Breath Biopsy® for applications in early disease detection and precision medicine, today announced a first closing of £22 million in its Series E financing round. The fundraise was led by Ventura Capital, joined by Aviva Ventures, Horizons Ventures, and other existing investors. The close also saw completion of the investment from the Gates Foundation.

The funds will be used to support the ongoing development of Owlstone’s proprietary Breath Biopsy® platform and the development and commercialisation of novel diagnostic tests and point of care devices.

These include in-human clinical trials currently underway for a screening test for the early-stage detection of lung cancer, the most common cancer killer in the world responsible for 1.8 million deaths each year; further development and launch of the LIBRA® test for the primary care and at-home diagnosis of chronic liver diseases, which account for over 2 million deaths worldwide annually; and commercialisation of the OMED Health® Breath Analyzer, a hand-held, low-cost medical device for the diagnosis and monitoring of digestive diseases that affect 1 billion people globally.

The enormous potential of breath-based diagnostics is becoming clearer every day, with Owlstone as the main driver of progress in the space. Our initial thesis has been confirmed through Owlstone’s recent partnerships with the U.S. Department of Defence, the Gates Foundation, and the FDA. We are pleased to support their ongoing development of Breath Biopsy, which has been proven by the first products approved in market in the US and UK.
Mo El Husseiny, Founding Partner at Ventura Capital
Owlstone has made tremendous progress since their last fundraise. This includes their proprietary Breath Biopsy platform and VOC Atlas® database, and in developing diagnostic solutions in high-need clinical areas with products now reaching the market. Aviva Ventures has been an early investor in the business, and we remain confident in Owlstone and its future impact on healthcare.
Tom Grant, Head of Venture Investments at Aviva
Testament to the power of Breath Biopsy is the continued strong support we continue to enjoy from our investors. The funds closed will enable us to progress our business to the next stage, advancing clinical trials and supporting the launch and commercialisation of our pipeline of unique breath tests.
Billy Boyle, Co-founder & CEO
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