Active03335143Private limited companyErith

INFALLIBLE SYSTEMS LIMITED

Significant control: Infallible Systems Group Limited (75–100%)

Companies HouseCompanies House

From public filings as at 31 Aug 2026; may contain errors or be out of date. Verify at Companies House · Terms

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Registered activity: Other specialised construction activities n.e.c. (SIC 43999). We’re building product and service lists for UK companies. Get this one when it’s ready.

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01

Summary

Generated from filed data · no estimates

INFALLIBLE SYSTEMS LIMITED is an active private limited company (company number 03335143) incorporated on 18 March 1997, registered in Erith. Its registered activity is other specialised construction activities n.e.c. (SIC 43999). Latest small accounts cover the period ending 30 September 2025, showing net assets of −£446k and cash of £30k, with 12 employees on average. Net assets fell 73% on the prior period (−£258k).

Peer position · net assets

By net assets it sits in the bottom quarter of 4,726 comparable companies in Greater London (median £5,286, upper quartile £35k).

02

Ownership and control

1 active · 1 other
  • Infallible Systems Group Limited
    corporate entity, United Kingdom · since 11 November 2020
    • owns 75–100% of shares
  • Infallible Systems Holdings Limited
    corporate entity, England And Wales · since 6 April 2016 · ceased 11 November 2020
    • owns 75–100% of shares
    • holds 75–100% 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
18 March 199729 yrs ago
Next accounts due
30 June 2027in 249 days
Confirmation statement due
1 April 2027in 159 days

Due dates are expected from Companies House filing rules; confirm on the official register before relying on them.

04

Activity

SIC 43999
Other specialised construction activities n.e.c.
Accounts type
Total Exemption Full
Size band
MicroCompanies Act thresholds
05

Financials

2 periods on record · latest ending 30 September 2025
Net assets
−£446k
vs Sept 2024
Cash at bank
£30k
−81%vs Sept 2024
Turnover
Not reported
Employees
12
No changevs Sept 2024
Net assets
−£446k
Cash at bank
£30k
Average employees
12
Filed accounts by period, newest first
Period endNet assetsCashDebtorsCreditors <1yTurnoverProfitEmployees
30 September 2025−£446k£30k£399k£745k——12
30 September 2024−£258k£161k£655k£933k——12
Current ratio0.58Current assets ÷ creditors within one year
Cash per employee£2,498Cash ÷ average employees

Figures as filed in iXBRL accounts at Companies House. "—" means the line was not reported in that filing.

06

Filing and accounts signals

Facts from the register · no rating
  • Net assets below zeroNet assets £-445,834 at 30 September 2025
  • Net assets down 25% or more on the prior period-72.9% vs prior period
  • Current assets below creditors within one yearCurrent ratio 0.58
  • Incorporated five or more years agoIncorporated 18 March 1997

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

Newest first
  1. Next accounts duein 249 days
  2. Confirmation statement duein 159 days
  3. Accounts period endNet liabilities £446k · small accounts
  4. Accounts period endNet liabilities £258k · small accounts
  5. Incorporated
08

Similar companies in Greater London

Same activity (other specialised construction activities n.e.c.), closest in incorporation date
09

Reminders for INFALLIBLE SYSTEMS LIMITED

Get an email before each filing deadline — accounts and confirmation statement — so nothing is late.

Source: Companies House register, snapshot 2026-08-31; accounts from the Companies House accounts data product. Open Government Licence v3.0. View on Companies House. Methodology · About · Markdown.