# Quantum companies in London, England

Browse quantum companies with an address in London. An address does not define a service area.

3 quantum companies. Also on the [web page](https://quantumcompanies.fyi/gb/england/london).

## Quantum companies

1. [Arqit](https://quantumcompanies.fyi/gb/england/london/arqit.md), Post-quantum cryptography vendors, London: Provides quantum-safe encryption products and PQC migration tooling, including software-defined encryption for telecom, government and critical infrastructure,…
2. [Cryogenic Limited](https://quantumcompanies.fyi/gb/england/london/cryogenic-limited.md), Quantum components, London: Supplies high-field superconducting magnets and cryogen-free low-temperature measurement systems down to 10 mK, with in-house manufacturing; products include…
3. [Mesa Quantum](https://quantumcompanies.fyi/gb/england/london/mesa-quantum.md), Quantum sensing and metrology, London: Develops mass-manufacturable, chip-scale quantum sensors on a neutral-atom platform, including VCSEL atomic clocks, RF magnetometers and atomic spin gyroscopes…

## Categories in London

- [Post-quantum cryptography vendors](https://quantumcompanies.fyi/gb/england/london/category/post-quantum-cryptography.md): 1 quantum company
- [Quantum components](https://quantumcompanies.fyi/gb/england/london/category/quantum-components.md): 1 quantum company
- [Quantum sensing and metrology](https://quantumcompanies.fyi/gb/england/london/category/quantum-sensing.md): 1 quantum company

## Questions

### How many quantum companies are in London?

Quantum Companies lists 3 quantum companies with an address in London, England.