High-Growth Sector
Quantum Technologies
A market overview of active UK companies in Quantum Technologies. Figures exclude dormant and dissolved companies. Data refreshed 30 Apr 2026.
Active companies
50
trading & on register
Reporting turnover
6
12% of active
Reporting employees
46
92% of active
Register health
11%
of 57 on register are dormant
Company size (employees)
Active companies reporting employee counts
Turnover distribution
Active companies reporting turnover
Where they're based
Active companies by major UK city (30km London, 15–20km elsewhere)
New formations by year
Active companies incorporated under this category (dormant shells excluded)
Largest by turnover
| # | Company | Turnover | EBITDA | Employees | 3y growth |
|---|---|---|---|---|---|
| 1 | RIVERLANE LTD | £2.1M | £8.2M | 96 | - |
| 2 | QUANTINUUM LTD | £2.0M | £31.0M | 174 | 37% |
| 3 | OXFORD QUANTUM CIRCUITS LIMITED | £339K | £20.6M | 133 | - |
| 4 | ARQIT LIMITED | £332K | £18.1M | 74 | -45% |
| 5 | QUANTUM BASE HOLDINGS PLC | £129K | £5.0M | 15 | - |
| 6 | QUANTUM BASE LIMITED | £18K | £2.4M | 14 | - |
Fastest-growing
Active companies with turnover ≥ £1m, sorted by 3-year turnover CAGR
| # | Company | Turnover | Employees | 3y turnover growth |
|---|---|---|---|---|
| 1 | QUANTINUUM LTD | £2.0M | 174 | 37% |
Newest formations
Most recently incorporated active companies
| # | Company | Location | Incorporated |
|---|---|---|---|
| 1 | QUANTUMIA LTD | Devon | 2023 |
| 2 | QUANTONOVA LIMITED | Cambridge | 2023 |
| 3 | QUINAS TECHNOLOGY LIMITED | London | 2023 |
| 4 | UK QUANTUM LTD | London | 2022 |
| 5 | DELTA G LIMITED | Birmingham | 2022 |
| 6 | PAN GALACTIC DEVELOPMENTS LTD | Hull | 2022 |
| 7 | ERGO QUANTUM LTD | Rugby | 2022 |
| 8 | ALGORITHMATI LIMITED | London | 2021 |
| 9 | NODEQ LIMITED | London | 2021 |
| 10 | KELPERSOFT LTD | London | 2021 |
| 11 | CAVERO QUANTUM LIMITED | Leeds | 2020 |
| 12 | CFX QUANTUM LTD | London | 2020 |
| 13 | QUANTUM DICE LIMITED | Oxford | 2020 |
| 14 | QUANTUM BASE HOLDINGS PLC | Lancaster | 2020 |
| 15 | DUALITY QUANTUM PHOTONICS LTD | Bristol | 2020 |
| 16 | AQUARK TECHNOLOGIES LIMITED | Eastleigh | 2020 |
| 17 | AEGIQ LTD | Sheffield | 2019 |
| 18 | ORCA COMPUTING LIMITED | London | 2019 |
| 19 | QURECA LTD | Glasgow | 2019 |
| 20 | UNITED QUANTUM LTD | Darlington | 2019 |