Birmingham-based Delta.g raises £4.6m led by Serendipity Capital for quantum sensing platform
At a glance
This article covers a seed funding round on 26 September 2025 for Delta.g, a UK-based quantum technology company focused on developing a gravity sensing platform, led by CEO Tony Lowe. The company has raised £4.6m, with the round led by Serendipity Capital and participation from NSSIF.
What does Delta.g do?
Delta.g offers a gravity sensing platform that utilises quantum sensors for high-resolution spatial data collection. Its primary purpose is to enhance subsurface imaging, navigation, and environmental monitoring for various industries.
Why is Delta.g useful?
Problem
Organisations struggle with limited access to high-resolution spatial data, leading to incomplete information and increased risks. This lack of reliable spatial intelligence results in costly delays and operational challenges across various sectors.
Solution
The company explains that it provides a gravity sensing platform that delivers quantum sensors with enhanced precision and reliability. This technology enables better subsurface imaging and navigation, helping organisations make informed decisions and reduce risks.
How much did Delta.g raise?
Delta.g raised £4.6m in an oversubscribed seed round, led by Serendipity Capital alongside NSSIF. This makes it the 32nd largest funding round in September 2025 (54 recorded). As of 26 September 2025, the round is the 214th largest of the year (461 total) in the Startupmag database.
For details on how Startupmag compiles its rankings, view our Methodology.
Who invested in Delta.g?
The key investors in this funding round include:
- Serendipity Capital: A venture capital firm focused on early-stage investments in technology companies. Its portfolio includes notable backings such as Quantum Motion and Oxford Quantum Circuits.
- NSSIF: An investment firm with a strategic focus on innovative technology sectors, particularly in dual-use applications.
- SCVC: A venture capital firm that invests in transformative science and technology startups, supporting early-stage companies to realise their potential.
In the funding announcement, Rob Jesudason from Serendipity Capital said:
Delta.g serves as yet another proof point of UK leadership in quantum and dual use technologies. Our investment reflects our firm belief that the multi-year investment by the UK Government in quantum technologies combined with the UK's world class scientific talent is producing companies that have the potential to obtain global leadership.
The investor believes Delta.g's scientific co-founders are truly world class in their field and looks forward to working with the company to help realise its groundbreaking potential.
If you're researching potential backers in this space:
- Explore our list of venture capital firms in the UK.
- Browse our directory of UK angel investors.
Who founded Delta.g?
Tony Lowe is the founder of Delta.g. Tony Lowe is the CEO.
In the funding announcement, Tony Lowe, CEO of Delta.g said:
We’re thrilled by the strong investor support at this early stage. This raise is more than capital; it’s a vote of confidence in our mission to make quantum sensing operational.
Where is Delta.g based?
Delta.g is based in Birmingham, UK.
What sector is Delta.g in?
Delta.g operates in the quantum technology sector. This sector focuses on developing advanced technologies using the principles of quantum mechanics. Quantum technologies can solve complex problems in various fields.
Key trends and challenges in the quantum sensing sector:
Advancements in Spatial Intelligence
Quantum sensing is improving spatial data accuracy, helping industries better anticipate risks and make informed decisions.
Limited Access to High-Resolution Data
Many sectors still struggle with poor subsurface data, leading to costly operational risks and inefficiencies.
Need for Real-World Applications
There is a growing demand for quantum technologies that can be deployed in practical, everyday situations across various industries.
For a deeper look at innovation in this space, see the latest funded startups in the UK
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