£84
−83%vs Apr 2024Active04313674Private limited companyBerkshire
CRITICAL MASS LIMITED
Significant control: Kevin John Southworth (25–50%)
From public filings as at 31 Aug 2026; may contain errors or be out of date. Verify at Companies House · Terms
Watch this company
Get an email when Companies House records a change for Critical Mass Limited: status, filings, accounts, officers or owners. Free.
Not live yet: alerts start by 15 December 2026. We store your email and this company number only, for these alerts. If alerts don’t launch, we tell you and delete your address. Privacy
Coming soon · product and service lists
What does Critical Mass Limited sell?
Registered activity: Information technology consultancy activities (SIC 62020). We’re building product and service lists for UK companies. Get this one when it’s ready.
One email, only about this. If we don’t launch within 60 days we’ll tell you. Privacy
01
Summary
CRITICAL MASS LIMITED is an active private limited company (company number 04313674) incorporated on 30 October 2001, registered in Berkshire. Its registered activity is information technology consultancy activities (SIC 62020). Latest micro accounts cover the period ending 29 April 2025, showing net assets of £84, with 1 employee on average. As micro-entity accounts, no profit and loss account is filed, so turnover and profit are not public. Net assets fell 83% on the prior period (£495).
Peer position · net assets
By net assets it sits in the bottom quarter of 3,641 comparable companies in Reading (median £11k, upper quartile £60k).
02
Ownership and control
- Mr Kevin John Southworth
- owns 25–50% of shares
- holds 25–50% of voting rights
- can appoint or remove directors
- Mrs Patricia Elizabeth Southworth
- owns 25–50% of shares
- holds 25–50% of voting rights
Persons with significant control hold 25% or more of shares or voting rights. Smaller shareholdings are only listed in confirmation-statement documents. Directors and secretaries: see the officers list at Companies House.
03
Key dates
- Incorporated
- 30 October 200124 yrs ago
- Next accounts due
- 29 January 2027in 93 days
- Confirmation statement due
- 13 November 2026in 16 days
Due dates are expected from Companies House filing rules; confirm on the official register before relying on them.
04
Activity
- SIC 62020
- Information technology consultancy activities
- SIC 63120
- Web portals
- Accounts type
- Micro Entity
- Size band
- MicroCompanies Act thresholds
05
Financials
Not reported
Not disclosed
1
Not reported the period before| Period end | Net assets | Cash | Debtors | Creditors <1y | Turnover | Profit | Employees |
|---|---|---|---|---|---|---|---|
| 29 April 2025 | £84 | — | — | £0 | — | — | 1 |
| 29 April 2024 | £495 | — | — | £454 | — | — | — |
Figures as filed in iXBRL accounts at Companies House. "—" means the line was not reported in that filing; micro-entity accounts contain no profit and loss account.
06
Filing and accounts signals
- Net assets above zeroNet assets £84 at 29 April 2025
- Net assets down 25% or more on the prior period-83.0% vs prior period
- Incorporated five or more years agoIncorporated 30 October 2001
Neutral facts read from the register and filed accounts, each with its evidence. They are not a rating, a prediction or advice, and may be incomplete or out of date. How each signal is derived.
07
Timeline
- Next accounts duein 93 days
- Confirmation statement duein 16 days
- Accounts period endNet assets £84 · micro accounts
- Accounts period endNet assets £495 · micro accounts
- Incorporated
08
Similar companies in Reading
- CONXION LTDBerkshire · inc. Oct 2001
- SILICON BRAIN LIMITEDReading · inc. Oct 2001
- TYGROVE LIMITEDLangley Slough · inc. Nov 2001
- B I SOLUTIONS LIMITEDSlough · inc. Nov 2001
- YELLOW SQUARE CONSULTING LIMITEDAldermaston · inc. Dec 2001
- WEB LABS LIMITEDIver · inc. Sept 2001
All companies incorporated on 30 October 2001 · in Oct 2001.
09
Reminders for CRITICAL MASS LIMITED
Get an email before each filing deadline — accounts and confirmation statement — so nothing is late.