Northern Gritstone

Investment firm

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Updated: Apr 1, 2026 ·

Financial History

Total Raised

N/A

Valuation

N/A

Investments Made

Date	Company	Round	Lead Investor(s)	Co-Investor(s)
Mar 26, 2026	Cytotrait	$4.0M Seed - 2026-03-26	Northern Gritstone, Duncan Johnson	Northern Universities Ventures Fund, Hassan Mahmudul
Jan 22, 2026	Optalysys	$30.9M Series A Extension	Duncan Johnson	imec.xpand, Lingotto, UK
Dec 15, 2025	IVFmicro	$4.7M Pre-Seed	Duncan Johnson	Innovate UK
Oct 1, 2025	Sitehop	$10.0M Series A	Duncan Johnson	Amadeus Capital Partners, Manta Ray Ventures, SID Venture Partners, Nick Kingsbury, Chris Borrett, Manta Ray Ventures
Aug 19, 2025	PhovIR	$5.4M Seed	Duncan Johnson, John Williams	—
Jun 1, 2025	Literal Labs	$6.0M Seed	Mercuri, Duncan Johnson	SuperSeed
Jan 28, 2025	BOW	$5.4M Seed	Duncan Johnson	—
Dec 1, 2024	Partful	$6.0M Series A	Northern Gritstone	Par Equity, Stanton Green
Nov 1, 2024	Silveray	$5.0M Seed	Northern Gritstone	ACF Investors, Angel Invest, Boost Capital Partners, Goodwater Capital, Parkwalk Advisors, sequel, Speedinvest, Desigan Chinniah
Mar 1, 2024	Phagenesis	$42.0M Series D	Drew Burdon, Michael Sjostrom	BOM Brabant Ventures, EQT Life Sciences, Aphelion, Ian Connatty, Duncan Johnson
Feb 27, 2024	Adsilico	$4.4M Seed	Duncan Johnson	Moray Wright
Dec 7, 2023	Pragmatic Semiconductor	$203.7M Series D	Niranjan Sirdeshpande, John Flint	Catherine Lewis La Torre CBE, Cambridge Innovation Capital, Latitude, MVolution Partners, Duncan Johnson, Prosperity7 Ventures
Nov 21, 2023	Floreon	$2.5M Series A	Duncan Johnson	—
Sep 4, 2023	Mimetrik	$2.5M Seed	Duncan Johnson	—
Sep 1, 2023	Pencil Biosciences	$7.0M Seed	—	Business Growth Fund, Hummingbird Ventures, Octopus Ventures, Jonathan Milner, GM&C Life Sciences Fund, Martlet Capital, Duncan Johnson, o2h Ventures, Syndicate Room, UKI2S
Aug 14, 2023	AssetCool	$2.9M Series A	Duncan Johnson	Kero Development Partners, Northern Powerhouse Investment Fund
Jul 18, 2023	Optalysys	$27.5M Series A	imec.xpand, Ashish Kaushik, Northern Gritstone	—
Feb 1, 2023	Re:course	$4.0M Seed	Par Equity	Rob Wood, Praetura Ventures
Jan 24, 2023	Slingshot Simulations	$3.7M Series A	Duncan Johnson	Will Clark - Mercia Ventures, Sean Hutchinson
Jan 1, 2023	QV Bioelectronics	$2.0M Seed	Stanley Fink, Johnathan Matlock	Curious Capital, Draper Associates, Elbow Beach Capital, SOSV, Catapult Ventures, Duncan Johnson
Aug 9, 2022	Imperagen	$4.2M Seed	Ed Stacey, Duncan Johnson	—
Jul 6, 2022	Iceotope	$35.9M Series B	Tan Shao Ming	Judith Hartley MBE, Edinv, Joe Ruzynski, Pavilion Capital, Jonathan Maxwell
Jun 1, 2022	Opteran	$12.0M Seed	Join Capital	Atomico, Episode 1 Ventures, Lockheed Martin Ventures, QVentures, Carl Bass, Charlie Songhurst, Joe White, Nicolas Berggruen, IQ Capital, Schauenburg Ventures, Rob Desborough
	AmpliSi	$3.0M Seed Round	Northern Gritstone, Clean Growth Fund, Duncan Johnson, Beverley Gower-Jones	—