Strategic Investment.
Sustainable Returns.
A UK-based private investment company focused on technology, healthcare, and growth-stage opportunities. Over a decade of disciplined investing across AI, biotech, fintech, and clean energy.
View PortfolioOur Approach
Disciplined analysis, long-term orientation, and rigorous risk management.
Disciplined Analysis
Every investment undergoes comprehensive due diligence. We build detailed financial models, analyze competitive dynamics, and stress-test assumptions before committing capital.
Long-Term Orientation
We invest with a multi-year horizon, seeking opportunities where patient capital can compound value over time. Our focus is on sustainable growth, not short-term fluctuations.
Risk Management
Capital preservation is our first priority. We maintain strict position sizing, ensure portfolio diversification, and continuously monitor investments.
Technology-Enabled
We leverage modern analytical tools—from Python-based data analysis to professional research platforms—to enhance decision-making and identify opportunities.
Portfolio
Selected investments across technology, healthcare, fintech, and emerging sectors.
Palantir Technologies
Global leader in data analytics and AI, serving government agencies and Fortune 500 enterprises. Achieved S&P 500 inclusion with 150% stock appreciation in 2025.
Hims & Hers Health
Leading telehealth platform with $1.5B+ revenue run rate and 2M+ subscribers. Expanded beyond men's health into weight management and mental health services.
Visual discovery platform with 500M+ monthly users. Successfully transitioned to AI-powered shopping recommendations and performance advertising.
UiPath
Global leader in robotic process automation (RPA), named a Leader in Gartner Magic Quadrant for seven consecutive years. $1.6B annual recurring revenue.
Flexport
Technology-first global freight forwarder. Secured $250M BlackRock partnership, launched 20+ AI-powered logistics products, revenue exceeding $2.1B.
Cybereason
Achieved 100% detection accuracy in 2025 MITRE ATT&CK evaluation. Elite endpoint detection and response platform for enterprise customers globally.
General Fusion
Becoming the first publicly traded pure-play fusion company via $1B SPAC transaction. Holds 210 patents and operates world's first large-scale magnetized target fusion machine.
ClearNote Health
Avantect® platform for early cancer detection received UK regulatory approval and CMS reimbursement at $1,160 per test. Selected for National Cancer Institute study.
23andMe
Pioneer in consumer genomics with world's largest genetic database. Acquired by TTAM in 2025, transitioning to nonprofit model focused on research advancement.
Pipe
Revenue-based financing platform enabling companies to trade recurring revenue for upfront capital. Raised $316M and serves thousands of SaaS companies.
Polygon (POL)
Leading Ethereum scaling solution with new stablecoin framework for institutional payments. VanEck and Grayscale filed for spot ETFs.
Genies
99% market share for celebrity avatars via Universal and Warner Music partnerships. $1B valuation with Bob Iger as investor and board member.
Leadership & Advisors
Artem Berezovsky
Artem leads Windmill Tower Enterprises, overseeing all investment activities from deal sourcing to portfolio management. With expertise spanning biomedical sciences, machine learning, and venture finance, he brings a disciplined, data-driven approach to every opportunity.
Education includes Biomedical Sciences at University of Buckingham, AI/Machine Learning at UC Santa Cruz, and Venture Finance at Oxford Saïd Business School.
Stuart Leaman
Stuart is Director at Leaman Mattei Chartered Accountants, providing expert tax and financial advisory services to Windmill Tower Enterprises. A Chartered Tax Advisor since 1978, he specialises in working with private clients and owner-managed businesses.
Stuart is a Member of the Chartered Institute of Taxation, the Association of Taxation Technicians, and the Society of Trust and Estate Practitioners. A regular media commentator on tax matters, he has appeared on BBC Newsnight.
Contact
General Inquiries
Investment Inquiries
Company Registration
Company Number: 08922624
Registered in England and Wales
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