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Blue John

Blue John is building trust infrastructure for regulated enterprise.

Software Development
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Headquarters
London, United KingdomSource: RevenueBaseRetrieved October 13, 2026
Employee range
1 to 10Source: RevenueBaseRetrieved October 13, 2026
Published list appearances
3 supported appearances ↗Source: RevenueBase lists
The company at a glance

What does Blue John do?

GREY is a platform for applications across talent, teams and organisations. The platform is built for regulated businesses making talent decisions involving reputational and regulatory risk.

Based on the company’s public LinkedIn information, supplied through RevenueBase.

What the business offers

Services & capabilities.

People risk intelligence

GREY combines applied neuroscience, AI and reputation analysis to reveal information about individuals beyond their claims.

Source: LinkedIn company description · Retrieved October 13, 2026

Explore the business in context

Company lists.

Supported appearances on published RevenueBase lists, including available memberships beyond displayed rankings.

Positions describe ordering within each source list. See how lists are built ↗

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BADGE PREVIEWBlue John listed #10 on Neural network risk assessment companies, September 19, 2026Open the published source list.
Blue John

#10 Neural network risk assessment companies

Snapshot: September 19, 2026

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Company information

Sources & data notes.

RevenueBase prepared this profile from the company’s public LinkedIn information and RevenueBase company data. These source records were retrieved on October 13, 2026. AI helped summarize these sources, with a separate automated check against the source text completed on November 4, 2026. Directory positions use company-contact counts from separate saved list snapshots dated September 19, 2026 and September 27, 2026. How the company lists are built.

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