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Phasecraft

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Quantum algorithms accelerating real-world computational applications

London, United KingdomFounded 2018Other B2B Software
Valuation $100–250M Last recorded · 2025
Revenue $1–10M Latest reported FY
Headcount <100 Current team size
Total funding $50–100M Disclosed equity funding
Unlock exact values This page shows ranges. Dealroom has the exact numbers for Phasecraft and the history behind them.

About Phasecraft

Phasecraft operates at the intersection of academic theory and commercial application in the quantum computing sector, focusing on the development of high-efficiency quantum algorithms. Founded in 2019 as a spin-out from University College London (UCL) and the University of Bristol, the company was established by three distinguished quantum scientists: Professor Ashley Montanaro, who serves as CEO; Professor Toby Cubitt, the CTO and Chief Science Officer; and Professor John Morton. Their collective journey stems from extensive academic careers, with each founder having over 20 years of research experience in quantum computation, quantum information theory, and mathematical physics. The decision to create a startup was driven by the realization that quantum hardware was advancing to a point where it could move beyond experimental stages, creating a pressing need for sophisticated software to harness its power for practical problems.

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The company's core business is to design quantum algorithms that significantly reduce the hardware requirements—such as the number of qubits and circuit depth—needed to solve complex problems, thereby accelerating the timeline to achieving quantum advantage. Phasecraft's revenue model is centered on partnerships with both quantum hardware manufacturers and companies in various industries that stand to benefit from quantum computation. By collaborating with hardware leaders like Google, IBM, Rigetti, Quantinuum, and QuEra, Phasecraft gains access to the most advanced quantum processors to test and refine its algorithms. This positions them to co-develop solutions for enterprise clients in sectors like materials science, pharmaceuticals, and telecommunications. Their clients are companies facing computational challenges that are intractable for even the most powerful classical supercomputers, such as discovering new materials for batteries and solar cells or optimizing complex networks.

Phasecraft's primary offering is its intellectual property in the form of novel quantum algorithms. These algorithms are engineered to perform specific, high-value computational tasks with greater efficiency than existing methods. For example, their work has demonstrated the ability to reduce the complexity of simulating a materials system by a factor of 400,000 and has resulted in the largest-ever materials system simulation on actual quantum hardware. A notable product of their research is an algorithm named THRIFT, which improves the efficiency of simulating dynamic quantum systems by a factor of 10, allowing for simulations on near-term hardware that are significantly larger and longer-running. This focus on making today's 'noisy,' intermediate-scale quantum computers useful is a key differentiator, bridging the gap between current hardware limitations and future fault-tolerant machines. The company has secured significant funding, including a £13m Series A round, to expand its world-class team and further its research.

Source: Dealroom company data

At a glance

Status
Operational
Founded
2018
Headquarters
London, United Kingdom
Employees
51
Open positions
6
Dealroom signal
90.4/100
Sector
Other B2B Software, Quantum Computing, Spinout, Quantum Computing Software, Future of Computing, Hard Tech, NIF defense security and resilience, NIF quantum, slush24, NIF Security of Critical Technologies, DT and LS
Technology
Deep Tech, Quantum Technologies
Business model
SaaS
Client focus
b2b

Funding history

9 recorded events

Company financing events and reported valuations.

Deal typeDateAmountValuationInvestorsSource
GRANTOther financing Jan 2026 $462K — UK Research and Innovation —
SERIES BOther financing Sep 2025 $33M $133M Novo Holdings · Playground Global · Plural ↗
Showing the latest 2 of 9 recorded eventsBook a demo for the full funding history →

Financials

Revenue over time

Revenue, earnings and other financial measures where available. Years marked “E” are estimates.

YearRevenueGrowth
2026
2025
2024
2023
2022
2021 —
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Growth signals

Phasecraft website traffic

Latest recorded traffic for Phasecraft is 8.5K monthly website visits, up 63.5% over the last three months. Phasecraft's team grew 18.6% over the past year.

Latest monthly visits8.5K 3-month web change+63.5% 1-year team growth+18.6%
Summary metrics are public; monthly history is available with a demoCompare with peers →

Similar companies

Closest operating peers by Dealroom taxonomy

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Showing 8 of the closest matchesCompare every metric →

Investments and acquisitions

Capital deployed

Recent portfolio relationships for companies that also act as investors or acquirers.

Investors

12 investors on the cap table

From Dealroom's funding and investor records, grouped by the round each investor first entered.

Seed6 investors entered at this stage

  • AlbionVC
  • Parkwalk Advisors
  • UCL Technology Fund
  • LocalGlobe
  • Episode 1 Ventures
  • UK Research and Innovation

Series A4 investors entered at this stage

  • Playground Global
  • London Co-Investment Fund
  • Plural
  • Novo Holdings

Other known investors2 additional known investors

  • University College London
  • University of Bristol
Team profiled 12 named & role-tagged
Founders Hidden — book a demo/100 quality score
Key operators 4 quality Hidden — book a demo/100
Potential founders Hidden — book a demo likely future founders
Startup mafia Hidden — book a demo alumni-founded startups
Talent movements Hidden — book a demo in · Hidden — book a demo out past 12 months

Source: Dealroom Talent Intelligence.

Global footprint

Workforce and web traffic by country
Workforce by country
5 countries with
team presence
🇬🇧 United Kingdom75.6%
🇺🇸 United States17.1%
🇨🇦 Canada2.4%
🇩🇰 Denmark2.4%
🇩🇪 Germany2.4%
5 countries shown

Market sentiment

Posts on X, past 7 days

An AI-synthesised read of the highest-engagement posts about Phasecraft on X, ranked by likes and reposts, corporate channels excluded.

Reading the room on X — pulling top posts and synthesizing themes…

Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour

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