# BLACKBOX SYSTEMS ENGINEERING LIMITED (08407986)

> BLACKBOX SYSTEMS ENGINEERING LIMITED is an active private limited company (company number 08407986) incorporated on 18 February 2013, registered in London. Its registered activity is business and domestic software development (SIC 62012). Latest micro accounts cover the period ending 28 February 2025, showing net assets of −£1,577, with 2 employees on average. As micro-entity accounts, no profit and loss account is filed, so turnover and profit are not public. Net assets fell 78% on the prior period (−£885).

- Status: Active
- Incorporated: 2013-02-18
- Registered office: London, SW19 3BP
- SIC 62012: Business and domestic software development
- Next accounts due: 2026-11-28
- Confirmation statement due: 2027-03-04
- Accounts type: MICRO ENTITY

By net assets it sits in the bottom quarter of 15,170 comparable companies in London (median £702, upper quartile £27k).

## Accounts (as filed)

| Period end | Net assets | Cash | Debtors | Creditors <1y | Turnover | Profit | Employees |
|---|---|---|---|---|---|---|---|
| 2025-02-28 | −£1,577 | — | — | £16k | — | — | 2 |
| 2024-02-29 | −£885 | — | — | £16k | — | — | 2 |

current ratio 0.9; size band micro.

## Filing and accounts signals (facts, not a rating)

- Net assets below zero: Net assets £-1,577 at 28 February 2025
- Net assets down 25% or more on the prior period: -78.2% vs prior period
- Current assets below creditors within one year: Current ratio 0.9
- Incorporated five or more years ago: Incorporated 18 February 2013

How each signal is derived: https://firmoscan.com/methodology

## Persons with significant control

- Mrs Katrina Claire Williams — owns 25–50% of shares, since 2016-04-06
- Mr Philip David Williams — owns 75–100% of shares, since 2016-04-06

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Source: Companies House register snapshot 2026-08-31, Open Government Licence v3.0. Information may have changed since that date and is not advice or a credit reference; check the official record before relying on it. Official record: https://find-and-update.company-information.service.gov.uk/company/08407986
HTML: https://firmoscan.com/company/08407986-blackbox-systems-engineering-limited