This week’s UK tech funding deals include AI firm Callosum, clean energy producer EcoNomad and more.
UKTN tracked £102.95m worth of UK tech investment this week (17 August to 21 August), a 72% week-on-week decrease across nine funding rounds.
Here’s your weekly roundup of UK tech startup funding deals.
Callosum – £73.5m
Sector: AI
HQ: London
Round: Seed
Investors: Atomico, Plural, DCVC, UK Sovereign AI Fund and angels
Founded in 2026, Callosum develops heterogeneous computing systems software designed to match specific AI tasks with the most cost-effective and computationally efficient models and silicon hardware.
Ampaire – £14m
Sector: Climate Tech
HQ: London
Round: Series B
Investors: IAGi Ventures (International Airlines Group), Alaska Airlines and DiamondStream Partners
Founded in 2017, Ampaire develops hybrid-electric retrofit propulsion systems and auxiliary power units (APUs) designed to integrate into commercial aircraft to reduce emissions, fuel burn, and operating costs.
Medly AI – £5.9m
Sector: Edtech / AI
HQ: London
Round: Seed
Investors: Felix Capital, Eka Ventures, Ada Ventures and angels
Founded in 2025, Medly AI builds an automated, personalised AI tutoring platform tailored to individual student learning styles to prepare them for GCSE and school exams.
Oshen – £3.65m
Sector: Deep Tech
HQ: Plymouth
Round: Seed
Investors: Lunar Ventures, AlbionVC, Twin Track, Concept Ventures and angels
Founded in 2022, Oshen manufactures fleets of autonomous, wind and solar-powered ocean-sensing robotic vessels that capture real-time open-ocean data for navies, ocean scientists, and weather agencies.
Noggin HQ – £2.3m
Sector: Fintech
HQ: Newcastle
Round: Seed
Investors: Blackfinch Ventures, Oxford Capital, Bethnal Green Ventures and angels
Founded in 2021, Noggin HQ is a credit reference agency that uses permissioned open-banking transaction data to provide alternative, cashflow-based credit scoring for underserved consumers.
Singular Photonics – £1.6m
Sector: Semiconductor
HQ: Edinburgh
Round: Seed
Investors: ACF Investors, Wren Capital, Cambridge Angels, Scottish Enterprise, Quantum Exponential and Old College Capital
Founded in 2021, Singular Photonics develops single-photon avalanche diode (SPAD) image sensors with on-chip computation for machine vision, robotics, and medical imaging.
RobotX – £1m
Sector: Agtech
HQ: Colchester
Round: Seed
Investors: British Design Fund, Innovate UK and Defra Farming Innovation Programme.
Founded in 2023, Versatile RobotX manufactures autonomous, AI-driven crop handling and harvesting robots under a Robotics-as-a-Service model to tackle agricultural labour shortages.
HexSeed – £600,000
Sector: Semiconductor
HQ: Aberdeen
Investors: Carbon13, Net Zero Technology Centre and Vento
Founded in 2025, HexSeed Technology transforms captured CO₂ into industrial synthetic diamond coatings applied directly to gallium nitride (GaN) power chips to prevent AI data centre semiconductors from overheating.
EcoNomad – £400,000
Sector: Agtech
HQ: Harpenden
Round: Seed
Investors: British Design Fund, Innovate UK and Beeches Group
Founded in 2018, EcoNomad Solutions manufactures compact, modular anaerobic digestion systems that allow small-scale livestock farms to convert organic agricultural waste into on-farm renewable biogas and biofertiliser.
