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SINGLE RULEBOOK LTD

Active
12008959·incorporated 2019-05-21

SINGLE RULEBOOK LTD is an active UK private limited company, incorporated on 21 May 2019 at Companies House (number 12008959; OpenRegistry canonical ID GB-12008959-single-rulebook-ltd). Sophymarine's OpenRegistry classifies it under SIC 62012 (Business and domestic software development), one of 87,841 active UK entities in that code and one of 1,093,852 active companies registered in London (postcode EC3A). Programmatic access via MCP at https://openregistry.sophymarine.com/mcp.

Status
Active
Type
Private Limited Company
Incorporated
2019-05-21
Registered Address
30 ST. MARY AXE, LONDON, EC3A 8BF, ENGLAND
SIC
62012 — Business and domestic software development
Country of origin
United Kingdom

Directors

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Shareholders

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Financials

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Filings

Check filing history of SINGLE RULEBOOK LTD

Accounts

Last filed accounts made up to 2025-01-31. Next accounts due 2026-10-31. Financial year-end: 31/01. Filing class: SMALL.

Confirmation statement

Last confirmation statement made up to 2025-05-20. Next confirmation statement due 2026-06-03.

Persons with significant control

SINGLE RULEBOOK LTD has 2 persons with significant control on file:

  • Kaizen Regtech Group Limited (England reg. 14662257). Notified 2023-02-28.
    • Holds 50–75% of voting rights
    • Has the right to appoint and remove directors
  • Mr Dario Marcello Crispini born 1966 resident in Guernsey, British national. Notified 2025-09-09.
    • Owns 75% or more of shares
    • Holds 25–50% of voting rights

3 historical PSC records have ceased:

  • Kaizen Reporting Limited (England reg. 08362415). Notified 2020-09-03. Ceased 2023-02-28.
    • Owns 75% or more of shares
    • Holds 75% or more of voting rights
    • Has the right to appoint and remove directors
  • Mr Wim Nelen born 1978 resident in United Kingdom, Belgian national. Notified 2019-05-21. Ceased 2020-09-03.
    • Owns 25–50% of shares
  • Ucalipt Limited. Notified 2019-05-21. Ceased 2020-09-03.
    • Owns 25–50% of shares

Previous names

SINGLE RULEBOOK LTD has previously traded as:

  • SINGLERULEBOOK.COM LTD (until 2020-11-17)

Similar UK companies

Other companies registered under SIC 62012 (Business and domestic software development):

Other companies registered in London:

Need real-time profile, officers, shareholders, financials or filing? Open the live profile at /company/gb/12008959.

Source: Companies House Free Company Data, refreshed 2026-05-01. Official record: find-and-update.company-information.service.gov.uk.