Centronic
Croydon, United KingdomFounded 1945Industry
Centronic makes radiation detectors and sensors. CBRNE-relevant work is a minor part of its offering according to its website. It is headquartered in Croydon, United Kingdom.
What it does
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Profile
Centronic was founded in 1945 as Centurion Tubes, later 20th Century Electronics, moved near Croydon in 1953 and began trading as Centronic in 1978. It makes radiation detectors for nuclear, aerospace, medical and defence use.
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Exosens UK Limited acquired the whole share capital in July to August 2024, with a condition that UK defence capability remain in the UK. In June 2025 Exosens united Centronic and Photonis Nuclear Instrumentation under the Exosens brand, while keeping their legal entities and the Croydon and Brive-la-Gaillarde sites.
A Science Museum Group record and a trade magazine article on 70 years in radiation detection describe the history. Contract values were not read.
Ownership
Owned by Exosens; Exosens UK Limited acquired 100 per cent in July to August 2024
Parent: Exosens UK Limited / Exosens International SAS (checked)
Sources (5)
- https://collection.sciencemuseumgroup.org.uk/people/cp6059/centronic-limited
- https://www.neimagazine.com/advanced-reactorsfusion/reflecting-on-70-years-in-the-radiation-detection-business-4559325/
- https://www.gov.uk/government/publications/acquisition-of-100-of-issued-share-capital-of-centronic-limited-by-exosens-uk-limited/acquisition-of-100-of-issued-share-capital-of-centronic-limited-by-exosens-uk-limited
- https://www.exosens.com/news/exosens-completes-closing-acquisition-centronic-leader-radiation-detection-solutions
- https://www.exosens.com/sites/default/files/2025-06/Exosens_Press_Release_Photonis_and_Centronic_United_02062025_v2.pdf
Not verified or not found
- Exact completion date within July to August 2024.
- Contract values: not read.
Questions
What does Centronic do?
Centronic makes radiation detectors and sensors. CBRNE-relevant work is a minor part of its offering according to its website.
Where is Centronic based?
HQ (as found): Croydon. HQ country: GB.
Who owns Centronic?
Owned by Exosens; Exosens UK Limited acquired 100 per cent in July to August 2024. Parent: Exosens UK Limited / Exosens International SAS (checked)
Profiles are compiled from public sources and sampled-checked, not fully audited. Last verified 17 October 2026. Report a correction