Skip to content
Governance Register
Sign inFind yourself
Find yourselfSign in
Search How it works For organisations For professionals

Edition

United Kingdom (current)IrelandUnited StatesNew ZealandCanadaAustraliaScotlandNorthern Ireland

The red node is John. Pale nodes are charities, grey nodes are companies, and darker grey nodes are the people who sit on them. Dashed links are historical or inferred. Click any node to explore.

Person

John Clark Mustarde

John Clark Mustarde is a director of 1 company. Source: Companies House records.

Director at 650B Limited

  • 1 current role
  • 15 previous roles
  • Served alongside 8 people
How am I connected?Sign in

Official record Companies House · updated 11th October 2026

Roles

16 roles across 16 organisations (1 current, 15 previous)

Current roles (1)

  • 650B Limited
    Director · 2015-present
    Official record · Companies House
    Source
    Companies House
    Organisation
    650B Limited
    Role
    Director
    Appointed
    2015-08-21
    Record reference
    Company 09743643
    Current

Previous roles (15)

Company roles, current and past, as filed at Companies House.

People John has served alongside

8 people across 16 organisations

Based on overlapping official board records. Calculated from official records It does not mean they know each other. Only formal co-service is listed: people are never joined on a matching name alone.

Spring DEV 01 Limited 4 people · 2022-2023 · current

Spring DEV 02 Limited 4 people · 2022-2023 · current

Spring DEV 03 Limited 4 people · 2022-2023 · current

Spring DEV 04 Limited 4 people · 2022-2023 · current

Spring DEV 05 Limited 4 people · 2022-2023 · current

Spring DEV 06 Limited 4 people · 2022-2023 · current

Spring DEV 07 Limited 4 people · 2022-2023 · current

Spring DEV 08 Limited 4 people · 2022-2023 · current

Hollywood Borrower Limited 3 people · 2023 · current

Softfusion Limited 1 person · 2000-2002 · current

650B Limited 1 person · 2016-2026 · current

Tangent.Energy Group Limited 1 person · 2017-2020 · current

Tangent.Energy Hybrid Hire Limited 1 person · 2017-2020 · current

Tangent.Energy Technologies Limited 1 person · 2017-2020 · current

Tangent.Energy Systems Limited 1 person · 2017-2020 · current

Sources

Companies House
Officer appointments and resignations.
Edition
Register edition compiled 11th October 2026
Identity
Records are treated as the same person only where our identity-matching rules support it. Confirmed relationships are supported by the approved identity-matching evidence and rules. Likely relationships are supported by sufficient evidence to suggest the records concern the same individual, but are not established as confirmed; they are shown with the label “Likely the same person”. How people are matched

Report an issue with this record · How we handle data · Object or ask for removal