£500K
Strange Ventures led the pre-seed round, which was closed in six weeks using the ThatRound platform.
HU
Hartley Ultrafast
Hartley Ultrafast builds optoelectronic computing systems for ultra-low-latency AI inference.
United Kingdom—Founded 2025
£500KTotal raised
Hartley Ultrafast develops optoelectronic computing systems that combine photons and electronics to accelerate AI inference and data processing.
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Net assets
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Cash, assets and headcount from Hartley Ultrafast's latest Companies House filing — with year-on-year movement, free with a Winfred account.
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Founders
Josh Silverstone
Founder & CEO
Josh serves as founder and CEO of Hartley Ultrafast and previously led Qontrol as chief executive officer, following research roles at the University of Bristol.
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