Investor Profile: Giant Ventures — Thesis, Cheque Size & How to Apply

Giant Ventures is a London based, multi-stage venture firm that backs purpose driven technology founders solving large, civilisation scale problems. For founders asking how to get funding from Giant Ventures, the starting point is a clear purpose test: does the company rebuild a foundational system, in energy, materials, industry, work, finance, biology or healthcare, rather than simply optimising an existing market?

Investment thesis

Giant describes itself as thesis driven and mission driven, seeking systemic change across climate, health and inclusive capitalism. Its newer framing focuses on frontier founders rebuilding the foundations of civilisation, from AI, robotics and automation to techbio, electrification and the future of work.

Sectors and stages

Sectors include climate technology, health technology, energy storage, carbon removal, virtual care, techbio and inclusive financial products. Stage coverage runs from pre-seed and seed through Series B and beyond, with early funds covering pre-seed to Series A and a growth fund aimed at the Series B climate funding gap.

Fund size and cheque size

Giant launched two new funds totalling $250 million: a $100 million seed fund intended to back 25 early-stage companies, and a $150 million growth fund for scale up climate technology companies. The firm says it leads pre-seed and seed rounds and invests between $10M and $20M at Series B and beyond.

Notable portfolio

Portfolio success stories cited by the firm include Calm, the mental health app valued at $2 billion in the firm's announcement, Agreena, a carbon removal platform linked to regenerative farming across two million hectares, Field, an energy storage startup that has raised $300M, and Doccla, a virtual hospital ward company.

Partners and team

Giant was founded in 2019 by Cameron McLain, an exited tech founder and former Hummingbird Ventures investor, and Tommy Stadlen, co-founder of Swing, acquired by Microsoft, and a former adviser on climate policy in the Obama administration.

Programs and perks

Named programmes include an incubation programme that builds companies in-house alongside investing in founders, and Giant Ideas, an annual summit for global leaders hosted at Tate Modern. The summit has featured speakers including DeepMind co-founder Mustafa Suleyman, Airbnb co-founder Nathan Blecharczyk, basketball player Russell Westbrook and web inventor Sir Tim Berners-Lee.

How to apply for funding

Giant does not publish a verified public pitch portal for this profile, so founders should not assume a form submission is the route in. Its Our Story page ends with the invitation: if you are building something transformative, we want to hear from you.