Directory

Greenly

ScaleupClimateSaaSForeign

Simplifiez votre comptabilité carbone avec Greenly. Notre plateforme vous accompagne dans la mesure et la réduction de vos émissions de CO2. Démo gratuite

Greenpixie

StartupClimateAIBritish

London-based GreenOps platform that provides granular cloud and AI emissions data across AWS, Azure, and GCP to help enterprises cut carbon and cloud waste.

Gresham House Ventures

VCFinanceAIBritish

Growth equity division of Gresham House, investing £1m–£20m in UK high-growth companies across healthtech, fintech, AI, and enterprise software.

Greyparrot

ScaleupAIClimateBritish

AI waste-analytics platform giving real-time composition data for recycling facilities; powers robotic sorting and circular-economy decisions.

Gridcog

StartupClimateSaaSBritish

Clean-energy project assessment and simulation SaaS giving a holistic, multi-site/multi-market view of solar, wind, battery storage, EV fleets and flexible loads.

Gridsight

StartupClimateAIForeign

Unlock hosting capacity. Accelerate flexible interconnection. Orchestrate DER at scale.

Griffin

ScaleupFinanceBritish

Licensed API-driven banking-as-a-service platform; a fully operational UK bank enabling embedded accounts and payments for fintechs and financial services businesses.

Grishin Robotics VC

VCConsumerGamingIncubator / AcceleratorForeign

Grishin Robotics is an early stage venture capital firm specializing in consumer hardware

Grow London

GovernmentOtherEcosystem Bodies, Catapults & InstitutionsBritish

Grow London is a suite of business support programmes delivered by London & Partners on behalf of the Greater London Authority, funded through the UK Shared Prosperity Fund. It encompasses Grow London Global (supporting tech scale-ups with international expansion), Grow London Local (free support for small businesses), and Grow London Early Stage (supporting early-stage high-growth companies in London).

GrowUp Farms

ScaleupAgritechFoodtechBritish

Vertical and indoor farm growing pesticide-free salad leaves and leafy greens at scale; operates a large automated vertical farm in Sandwich, Kent. The operational business was rescued from administration in December 2025 via a pre-pack deal backed by Sun Capital Partners, retaining 83 jobs.

Guinness Ventures

VCFinanceConsumerBritish

London-based VC firm offering EIS, VCT and SEIS tax-efficient investments into UK Series A scale-ups across consumer, business services and healthcare.

GumGum

ScaleupMediaAIForeign

A global advertising technology company identifying the moments consumers are most receptive — delivering mindset-driven campaigns across CTV, online video, and high-impact display at scale.

H

StartupAIForeign

H is a frontier AI research lab and agentic platform that works across any system or interface without rebuilding your stack.

H2O Venture Partners

VCClimateBritish

H2O Venture Partners is an Oxford-based impact venture capital firm founded in 2013 that commercialises early-stage technologies from universities and research organisations to address agricultural, health, and environmental challenges. The firm works alongside founder inventors to build new enterprises, with investments spanning the UK and sub-Saharan Africa, particularly Rwanda and Tanzania. H2O Venture Partners invests at seed and Series A stages in companies targeting smallholder agriculture, health outcomes, and environmental sustainability.

HAL Robotics

StartupSaaSBritish

Vendor-agnostic software framework for programming, simulating and controlling industrial robots (1,000+ models) across manufacturing, construction and creative industries.

HERVISIONS

CommunityOtherBritish

HERVISIONS is a femme-focused curatorial agency founded in London in 2015 by Zaiba Jabbar, commissioning and producing digital art at the intersection of technology and culture. It collaborates with cultural institutions such as Tate, the V&A and the BFI, and is supported by Arts Council England.

HERmesa

VCOtherBritish

HERmesa is a UK-based women-led angel syndicate that backs female co-founded startups at pre-seed and seed stage. Founded in January 2020, the syndicate has grown to over 225 members and has collectively invested in over 32 rounds of financing in women-led startups, requiring that women co-founders hold at least 20% equity and meaningful decision-making roles, and has been shortlisted as UKBAA Angel Group of the Year for two consecutive years.

HEXR

ScaleupConsumerBritish

Mass-personalised additive manufacturing: 3D-printed, custom-fit cycling helmets via head scanning and SLS honeycomb structures (~26% safer).

HICO

PELogisticsClimateVCForeign

HICO is an investment company focused on the maritime and logistics sector, with interests in hospitality

HICX

ScaleupSaaSBritish

HICX Supplier Management Software Solutions. Reduce the cost of managing suppliers while streamlining operations and ensuring compliance. Book a Demo Today.

HIVE

StartupAIDeep TechBritish

HIVE is a physical AI startup that retrofits existing industrial machines, such as forklifts, wheel loaders and excavators, with a 'silicon brain' intelligence platform so they can operate autonomously across warehouses, construction sites and production lines. Founded in Norway and now headquartered in London, it sells autonomy-as-a-service backed by a remote human-in-the-loop supervision model.

HIVED

ScaleupLogisticsAIBritish

Fully electric, AI-powered parcel delivery network for e-commerce, run on its HIVEDmind machine-learning logistics platform.

HPE

CorporateOtherAIForeign

Hewlett Packard Enterprise (HPE) is a global technology company providing servers, storage, networking, software, and cloud and edge computing solutions to enterprises. Spun off from Hewlett-Packard in 2015, it serves businesses of all sizes across the public and private sectors. HPE has significant UK operations including offices in Bracknell and a research and development hub in Bristol.

HSBC Ventures

VCFinanceAIBritish

HSBC Ventures is the corporate venture and innovation arm of HSBC Holdings, based in London and founded in 2014. The team invests in early-to-later-stage technology companies relevant to digital banking, with a focus on fintech, cybersecurity, digital identity, artificial intelligence, digital assets, and quantum computing. Portfolio companies include Elliptic, Monese, Nova Credit, and Zolve.