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Company number
04313674

CRITICAL MASS LIMITED

Active
✓ Active company on the official register. Next accounts due 29 January 2027.

Company details

South East, England Contains OS data © Crown copyright and database right. Contains Royal Mail data © Royal Mail copyright and database right. Source: Office for National Statistics licensed under the Open Government Licence v.3.0.
Registered name
CRITICAL MASS LIMITED
Company number
04313674
Registered office
55 FIDLERS WALK, WARGRAVE, BERKSHIRE, RG10 8BA · 6 other companies at this postcode
Company type
Private Limited Company
Incorporated on
30 October 2001
Status
Active
Age
24 years
Nature of business (SIC)
62020 — Information technology consultancy activities · 63120 — Web portals
Accounts — next due
29 Jan 2027
Accounts — last made up to
29 Apr 2025
Confirmation statement — next due
13 Nov 2026
Confirmation statement — last
30 Oct 2025

What the register says

Facts from the register, with the dates they are filed under. Not a score: what they mean is for you to judge, and every line can be checked against Companies House itself.

Companies House register snapshot, read 02/09/2026.

People with significant control

Beneficial owners holding over 25% of shares, voting rights or the right to appoint directors

Mr Kevin John Southworth
owns 25–50% of shares · holds 25–50% of voting rights · can appoint and remove directors
Notified 30/10/2016
Mrs Patricia Elizabeth Southworth
owns 25–50% of shares · holds 25–50% of voting rights
Notified 30/10/2016

Corporate structure

Who controls this company, and who they control in turn

2 controllers Drag to move · scroll to zoom · double-click to expand
Company Person Current control Ended

Connections

Mr Kevin John Southworth
born 07/1961 · England owns 25–50% of shares · holds 25–50% of votes · can appoint and remove directors Notified 30/10/2016 Controls 3 companies
Mrs Patricia Elizabeth Southworth
born 04/1959 · England owns 25–50% of shares · holds 25–50% of votes Control ended 30/03/2026

Change history

Reconstructed from the dated records Companies House publishes

DateChangeWasNow
30/03/2026 Person with significant control ceased Mrs Patricia Elizabeth Southworth
30/10/2016 Person with significant control added Mrs Patricia Elizabeth Southworth
30/10/2016 Person with significant control added Mr Kevin John Southworth

Financial highlights

Parsed from the filed statutory accounts (£ thousands, except employees)

Source: Companies House bulk data filed accounts (iXBRL)
Metric FY2025FY2024
Total assets less current liabilities 0
▼ 83.0%
0
Net assets 0
▼ 83.0%
0
Employees (avg) 1

Documents for CRITICAL MASS LIMITED

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Company extract£1.99

The full registration record as held today — name, number, status, registered office, company type, previous names, officers, PSC and SIC codes, timestamped for your file.

PDF Order
Financial statements£3.99

Every figure the company’s own accounts state, across each filed period, with year-on-year movement. Most UK companies file small or micro-entity accounts — a balance sheet and a headcount, no turnover or profit.

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Ownership report£3.99

Who controls the company: persons with significant control, the nature of that control, the ownership graph and every other company those controllers hold.

PDF Order

Data protection register

Registered with the Information Commissioner's Office as a data protection fee payer.

Critical Mass Limited — RG10 8BA
Tier 1 · renews 28/09/2026
ICO entry

The ICO publishes no company number, so this is matched on the registered name and confirmed by the postcode. Check the ICO entry before relying on it.

Get this company via API

Every field on this page is available as structured JSON behind one endpoint and one API key.

GET /v1/company/gb/04313674
X-Api-Key: $OPENDATA_KEY
Read the API docs

Frequently asked questions

What is the company number of CRITICAL MASS LIMITED?
According to the official registry, the company number of CRITICAL MASS LIMITED is 04313674.
Where is CRITICAL MASS LIMITED registered?
The registered office is 55 FIDLERS WALK, WARGRAVE, BERKSHIRE, RG10 8BA.
What is the SIC code of CRITICAL MASS LIMITED?
The nature of business is recorded under SIC code 62020 — Information technology consultancy activities, 63120 — Web portals.
Who controls CRITICAL MASS LIMITED?
Mr Kevin John Southworth is recorded as a person with significant control, and owns 25–50% of shares, holds 25–50% of voting rights, can appoint and remove directors.
When are the next accounts of CRITICAL MASS LIMITED due?
The next annual accounts are due by 29 January 2027, and the last accounts were made up to 29 April 2025.

About CRITICAL MASS LIMITED (04313674)

CRITICAL MASS LIMITED is a private limited company incorporated on 30 October 2001 and registered in the United Kingdom under company number 04313674. Its registered office is at 55 FIDLERS WALK, WARGRAVE, BERKSHIRE, RG10 8BA. The recorded nature of business is information technology consultancy activities (SIC 62020). The company is currently active , with statutory accounts last made up to 29 April 2025. , and the person with significant control is Mr Kevin John Southworth. This profile is provided by opendata.bot by Noetikos, aggregating official data from Companies House bulk data , last refreshed 2 September 2026.

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