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Brookstreet Equity Partners

Growth equity

London · Series A–Late Stage · 22 people tracked

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Investment thesis

Brookstreet pursues a 'Hybrid Growth Capital' strategy aimed at closing the gap between reported IRR and realised DPI, emphasising duration discipline, defined exit pathways, and realised value. The firm targets equity-funding-gap opportunities (notably Series A/B and later growth) with clear up-round and exit plans, spanning scale-ups through buyouts and consolidations. Its investment focus centres on data-driven AI applications in four themes: digital transformation (software, IoT, cybersecurity, robotics/drones), energy transition (renewables, storage, circular economy, sustainable technologies), longevity (personalised medicine, diagnostics, healthspan/lifespan tech), and defence technology (secure communications, threat detection, autonomous systems, space and critical infrastructure). Brookstreet operates globally across the USA, Europe, MENA, and Asia.

Source: firm website, verified Sep 27, 2026.

Stage
Series A–Late Stage
HQ
London, GB
Leads rounds
Leads
Instruments
Equity · Debt
Founded
2016
Tracked investments
10

Team · 22 people

from the firm's website & curated & public directories
Dimitris Caramitsos-Tziras· EIR | International Diplomat

Former Ambassador of Greece to Japan and to London, UK.

Pavlos Efthymiou· EIR | Partner of Fortune Greece

Partner of Fortune Greece, Executive Director of EENE and Cambridge PhD.

What they invest in

from 4 of 10 portfolio companies

AI & Machine Learning ×2Deep Tech ×2Cleantech ×1Cybersecurity ×1Energy ×1Enterprise Software ×1IoT ×1New Materials ×1

HQs:United Kingdom×1Greece×1

Investments · 10 tracked

founders shown can be your intro path
Behavioral Signalsbehavioralsignals.comin𝕏

Behavioral Signals develops emotion recognition AI technology that analyzes speech to detect human emotions and behaviors.

AI & Machine LearningEnterprise SoftwareSaaSSales TechAthens, GR

Alex Potamianos(Founder)Shrikanth Narayanan(Founder & Chief Scientist)in

Co-investorsIn-Q-TelKairos Venture Investments, LlcPresto Ventures

CyberOwlcyberowl.ioin𝕏Sep 2022 · $5.1M

CyberOwl develops Medulla, a cybersecurity platform that provides asset inventory, continuous security monitoring, and risk visibility for maritime and shipping fleets.

CybersecurityIoTLondon, GB

Daniel Ngin

Co-investors24 HaymarketPhaze VenturesTechstars

Nanophosnanophos.com

NanoPhos develops and manufactures nanotechnology-based materials and coatings for construction and marine applications, including self-cleaning, antistatic, and protective surface products for interior and exterior surfaces.

CleantechDeep TechNew Materials

Perceptual Roboticsperceptual-robotics.comin𝕏

A company offering autonomous drone inspection solutions for manufacturers, particularly for turbine maintenance on onshore and offshore facilities, with AI-powered data analytics and predictive maintenance tools.

AI & Machine LearningDeep TechEnergyRobotics

Co-investorsInvesting for Purpose AEDAKESMetavallon VCOne Planet CapitalTSP Ventures

Other

Tracked investments with no reachable website or further public details — typically companies that wound down, renamed, or were absorbed.

AutonomoGizelis RoboticsSwissmed HealthTerracomTickethourYodiwo

Portfolio news

latest coverage across their companies

Principals & officers · per Companies House

what is this? ⓘ
Omiros Sarikas

LLP designated member · since 2016

GVB Investments LTD

Corporate LLP designated member · since 2016

Laleham Broadband Limited

Corporate LLP member · since 2018

Qino GS LTD

Corporate LLP member · since 2021

Ownership & control

Alexandra Bakagia — 25–50% of voting rights, right to share surplus assets 25 to 50 percent limited liability partnership

Omiros Sarikas — 50–75% of voting rights, right to share surplus assets 50 to 75 percent limited liability partnership, right to appoint and remove members limited liability partnership

Frequently asked questions

How many investments has Brookstreet Equity Partners made?
Brookstreet Equity Partners has 10 tracked investments.
What stage does Brookstreet Equity Partners invest at?
Brookstreet Equity Partners invests at the Series A, Series B, Series C, Growth, Late Stage stages.
What sectors does Brookstreet Equity Partners focus on?
Brookstreet Equity Partners focuses on AgTech, AI & Machine Learning, Circular Economy, Cleantech, Climate Tech, Cloud Computing, Cybersecurity, Data & Infrastructure, Defense Tech, Developer Tools, Digital Health, Energy, Enterprise Software, Healthtech, IoT, Logistics & Supply Chain, Longevity, Medical Devices, Retail Tech, Robotics, SaaS, Space Tech, Wellness & Fitness.
Where is Brookstreet Equity Partners located?
Brookstreet Equity Partners is headquartered in London, GB.
Does Brookstreet Equity Partners lead rounds?
Yes, Brookstreet Equity Partners leads investment rounds.
Who does Brookstreet Equity Partners co-invest with?
Brookstreet Equity Partners most often shares deals with 24 Haymarket, In-Q-Tel, Kairos Venture Investments, Llc, among 9 tracked co-investors.

Images

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