Alexander Fitzgerald
Founder and CEO of Isembard, founded October 2024. Previously founded challenger broadband company Cuckoo (acquired by Giganet in 2022, part of the Fern Trading/Octopus Investments-backed altnet group) and worked as a civil servant at HM Treasury. Studied Biochemistry at the University of Nottingham; is a UK Army Reservist.
Fitzgerald founded Isembard in October 2024, self-funding it with proceeds from selling his previous company, Cuckoo. Isembard is a software-first precision manufacturing company whose platform, MasonOS, handles quoting, supply chain, scheduling, production and billing for a distributed network of factories making components for aerospace, defense, drones, satellites, nuclear energy and motorsport. Its first factory opened in London in early 2025, since expanding to Texas and sites across the UK, France and Germany. Fitzgerald has served as a UK Army Reservist since 2016. He previously co-founded Cuckoo (2019-20), a broadband ISP acquired by Giganet in 2022, and worked at HM Treasury and energy startup Bulb. He is also an active angel investor, with stakes including Freetrade, what3words and Arondite.
Overview
- Role
- Founder & CEO, Isembard
- Based in
- London, UK
- Prior experience
- Cuckoo (founder; acquired by Giganet 2022; part of Fern Trading/Octopus Investments-backed altnet group), HM Treasury (civil servant)
Affiliated funds0
No linked records yet.
Frequently asked
- Who is Alexander Fitzgerald?
- Fitzgerald founded Isembard in October 2024, self-funding it with proceeds from selling his previous company, Cuckoo. Isembard is a software-first precision manufacturing company whose platform, MasonOS, handles quoting, supply chain, scheduling, production and billing for a distributed network of factories making components for aerospace, defense, drones, satellites, nuclear energy and motorsport. Its first factory opened in London in early 2025, since expanding to Texas and sites across the UK, France and Germany. Fitzgerald has served as a UK Army Reservist since 2016. He previously co-founded Cuckoo (2019-20), a broadband ISP acquired by Giganet in 2022, and worked at HM Treasury and energy startup Bulb. He is also an active angel investor, with stakes including Freetrade, what3words and Arondite.
- What is Alexander Fitzgerald's role?
- Alexander Fitzgerald is Founder & CEO, Isembard, based in London, UK.
- Where did Alexander Fitzgerald work before?
- Alexander Fitzgerald's prior roles include Cuckoo (founder; acquired by Giganet 2022; part of Fern Trading/Octopus Investments-backed altnet group), HM Treasury (civil servant).
Sources & citations8
Each claim links to its underlying source. Confidence reflects how directly the source supports the claim.
- 1
After one call with Alex Fitzgerald, the CEO and founder of Isembard, franchisee Shaun Rowcliffe knew it was the right move; within four months the Exeter factory was up and running
Insider Media: After One Call With Alex Fitzgerald, The CEO and Founder of Isembard, I Just Knew It Was the Right MoveReported2026-08-02 - 2
Isembard raised ~$9M seed funding to reshore manufacturing for critical industries
TechCrunch: British startup Isembard lands $9M to reshore manufacturing for critical industriesReported2025-04-24 - 3
Isembard Ltd incorporation record, Companies House #15989684
Companies House: ISEMBARD LTDVerified2026-08-09 - 4
Alexander Fitzgerald Q&A on founding Isembard, army reserve background
Startup Coalition: Q&A with Alexander FitzgeraldReported2026-08-09 - 5
Alex Fitzgerald's Cuckoo founding story, HM Treasury and Bulb career path
TechRound: Meet Alex Fitzgerald, CEO and Founder at Challenger Broadband Company: CuckooReported2026-08-09 - 6
- 7
Giganet acquires Cuckoo in bid to shake up broadband market
Cuckoo: Giganet acquires Cuckoo in bid to shake up broadband marketVerified2022-09-01 - 8
Full fibre provider Giganet acquires Cuckoo
DatacenterDynamics: Full fibre provider Giganet acquires CuckooVerified2022-09-01