INTERLOCK COMPUTER SYSTEMS LIMITED
Company number 01905256 · Active · London W1W 5PF
INTERLOCK COMPUTER SYSTEMS LIMITED is an active private limited company (company number 01905256) incorporated on 16 April 1985, registered in London. Its registered activity is information technology consultancy activities (SIC 62020). Latest micro accounts cover the period ending 31 March 2025, showing net assets of £201, 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 58% on the prior period (£473).
By net assets it sits in the lower half of 19,391 comparable companies in London (median £3,248, upper quartile £35k).
Key dates
- Incorporated
- 16 April 1985
- Next accounts due
- 31 December 2026 — in 74 days
- Confirmation statement due
- 30 April 2027 — in 194 days
Due dates are expected from Companies House filing rules; confirm on the official register before relying on them.
Activity
- SIC 62020
- Information technology consultancy activities
- Accounts type
- Micro Entity
- Size band
- Micro (Companies Act thresholds)
Financials — 2 periods on record, latest ending 31 March 2025
| Period end | Net assets | Cash | Debtors | Creditors <1y | Turnover | Profit | Employees |
|---|---|---|---|---|---|---|---|
| 31 March 2025 | £201 | — | — | £0 | — | — | 1 |
| 31 March 2024 | £473 | — | — | £438 | — | — | 1 |
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.
Firmoscan score: 60/100 (grade C)
- +10 Positive net assets — Net assets £201 at 2025-03-31
- -8 Net assets falling — -57.5% vs prior period
- +8 Established — Incorporated 1985-04-16 (41 years)
A transparent, rules-based score from filed data only: every point lists its evidence. It is not a credit rating or advice.
Ownership and control
- Mr Gregory John Finnigan — owns 50–75% of shares · since 20 August 2025
- Mrs Marion Finnigan — owns 50–75% of shares · since 20 August 2025
- Mr David Henry Finnigan — owns 75–100% of shares · since 6 April 2016 · ceased 14 September 2025
Persons with significant control hold 25% or more of shares or voting rights. Smaller shareholdings are only listed in confirmation-statement documents.
Similar companies in London
Same activity (information technology consultancy activities), closest in incorporation date.
- RARE LIMITED — London, inc. Apr 1985
- O.C.S. CONSULTING PLC — London, inc. Mar 1985
- HEATHCLIFFE COMPUTERS LIMITED — London, inc. Mar 1985
- ASCENT DESIGN LIMITED — Walthamstow, inc. May 1985
- ANDREW BANNOCK LIMITED — London, inc. May 1985
- FIS ENERGY SOLUTIONS LIMITED — London, inc. Feb 1985
Reminders for INTERLOCK COMPUTER SYSTEMS LIMITED
Get an email before each filing deadline — accounts and confirmation statement — so nothing is late.