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Company No. 12008959 · Incorporated 21 May 2019

Single Rulebook Ltd

Registered name: SINGLE RULEBOOK LTD

Part of Kaizen Regtech Holdings Limited group

Single Rulebook Ltd does not publish its revenue or profit. Its accounts to 31 Jan 2024 show net assets of -£3.2m and 6 employees.

Single Rulebook Ltd did not publish its revenue or profit — small companies aren’t required to file a profit & loss account. Its accounts for the year to 31 Jan 2024 showed net assets of −£3.2m and 6 employees. The company is classified under “business and domestic software development” and is based in London; we hold 2 years of its filed accounts.

Balance sheet onlySection J · Information and communicationSIC 62012Business and domestic software developmentSIC 63110Data processing, hosting and related activities
Status
Active
Location
London, London
Age
7 yrs · since 2019
Type
Private Limited Company

Part of a group. The filing indicates this company sits within a group structure, so its results may depend on intra-group trading and it may be hard to replicate independently.

Latest accounts · year to 31 Jan 2024

Key figures

Small team

Revenue not disclosed

Single Rulebook Ltd’s accounts for the year to 31 Jan 2024 contain a balance sheet but no profit & loss account, so its revenue and profit are not public. UK small and micro-entity companies are not required to publish a P&L — this is normal and says nothing about how the business is performing.

We never estimate revenue. Below you’ll find the balance-sheet figures that were filed — useful as indirect signals of momentum, but they are not revenue or profit.

Employees
6
Net assets
−£3.2m

Badges are automated estimates derived from the filed figures — not statements of fact about the company.

2 filed years

Financial history

Multi-year financials, oldest to newest
Year to31 Jan 202331 Jan 2024
DisclosureNo P&LNo P&L
Profit & loss
Revenue (turnover)——
Profit (best available)——
Employees (average)76
Ratios
Profit margin——
Growth (year on year)
Headcount growth—▼14.3%
Balance sheet — indirect signals, not revenue
Cash at bank£167k£138k
Net assets−£2.6m−£3.2m
Fixed assets£1.5k£13.9k
Current assets£189k£477k
Debtors£22.5k£39.5k
Deferred income£153k£310k
SourceFullAccounts · bulk data Jan 2025FullAccounts · bulk data Jan 2025
Indirect — not revenue

Balance-sheet signals

Year-on-year changes in filed balance-sheet items. They can hint at momentum (or investment) but are not revenue or profit and must not be read as such.

Net assets
—
Now −£3.2m
Cash at bank
▼17%
Now £138k
Headcount
▼14%
Now 6
Deferred income
▲102%
Now £310k
Fixed assets
▲817%
Now £13.9k

Deferred income is reported together with accruals in this filing (“accruals and deferred income”), so it is an approximate signal only.

Corporate ownership

Group structure

Ownership chain

  1. Kaizen Regtech Holdings Limitedultimate parent75–100%
  2. Kaizen Regtech Group Limited50–75%
  3. Single Rulebook Ltdthis company

Bands show the share of ownership each company holds in the one below it.

Sister companies (3)

From the Persons with Significant Control register (corporate controllers only).

Same industry, similar size

Similar profitable businesses

Industry benchmarks →

Sources

Companies House profile Filing history & original accounts

Latest figures from FullAccounts for the year to 31 Jan 2024, from the Companies House accounts bulk data published Jan 2025. Spotted an error? Request a correction.

Updated from Companies House on 11 Oct 2026

Contains public sector information from Companies House licensed under the Open Government Licence v3.0. Data from Companies House, © Crown copyright. View the licence.