CERTAIN SIX LIMITED
Company number 10748501 · Active · London EC2V 6DN
CERTAIN SIX LIMITED is an active private limited company (company number 10748501) incorporated on 2 May 2017, registered in London. Its registered activity is business and domestic software development (SIC 62012). Latest small accounts cover the period ending 31 March 2025, showing net assets of £3.21m and cash of £259k, with 6 employees on average. Net assets fell 15% on the prior period (£3.80m).
By net assets it sits in the top quarter of 15,170 comparable companies in London (median £702, upper quartile £27k).
Key dates
- Incorporated
- 2 May 2017
- Next accounts due
- 31 December 2026 — in 70 days
- Confirmation statement due
- 16 May 2027 — in 206 days
Due dates are expected from Companies House filing rules; confirm on the official register before relying on them.
Activity
- SIC 62012
- Business and domestic software development
- Accounts type
- Total Exemption Full
- 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 | £3.21m | £259k | £184k | — | — | — | 6 |
| 31 March 2024 | £3.80m | £898k | £280k | — | — | — | 8 |
- Cash per employee
- £43k
Figures as filed in iXBRL accounts at Companies House. "—" means the line was not reported in that filing.
Firmoscan score: 72/100 (grade B)
- +10 Positive net assets — Net assets £3,212,847 at 2025-03-31
- +4 Cash reserves — Cash £258,635
- +8 Established — Incorporated 2017-05-02 (9 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 Mark Knopfler — owns 50–75% of shares; owns 50–75% of shares; holds 50–75% of voting rights; holds 25–50% of voting rights · since 4 February 2020
- Mr Ronnie Michael Harris — owns 50–75% of shares; owns 50–75% of shares; holds 50–75% of voting rights; holds 25–50% of voting rights · since 4 February 2020
- Mr Simon Keith Smith — owns 75–100% of shares; holds 75–100% of voting rights · since 2 May 2017 · ceased 24 August 2017
- (persons with significant control statement) — · since 24 August 2017 · ceased 25 August 2017
- Mr Ronnie Michael Harris — owns 25–50% of shares; owns 25–50% of shares; holds 25–50% of voting rights; holds 25–50% of voting rights · since 25 August 2017 · ceased 2 January 2020
- Mr Mark Knopfler — owns 25–50% of shares; owns 25–50% of shares; holds 25–50% of voting rights; holds 25–50% of voting rights · since 25 August 2017 · ceased 2 January 2020
- Mr Nicholas Alexander Smith — owns 25–50% of shares; holds 25–50% of voting rights · since 2 January 2020 · ceased 15 December 2022
- Mr Alex Michael Metaxas — owns 25–50% of shares; holds 25–50% of voting rights · since 2 January 2020 · ceased 15 December 2022
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 (business and domestic software development), closest in incorporation date.
- ARGUS TRUE ID LIMITED — London, inc. May 2017
- YELLOW SQUIRREL LTD — London, inc. May 2017
- CUTTING WEB LTD — London, inc. May 2017
- FENNECH FINANCIAL LTD — London, inc. May 2017
- SERENDIPITY AI LIMITED — London, inc. May 2017
- L2 STUDIOS LIMITED — London, inc. May 2017
All companies incorporated on 2 May 2017 · in May 2017.
Reminders for CERTAIN SIX LIMITED
Get an email before each filing deadline — accounts and confirmation statement — so nothing is late.