£3,429
vs Mar 2024Active13275721Private limited companyLondon
SUB 51 OPERATIONS LTD
Significant control: Sub 51 Holdings Ltd (75–100%)
From public filings as at 31 Aug 2026; may contain errors or be out of date.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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What does Sub 51 Operations Ltd sell?
Registered activity: Business and domestic software development (SIC 62012). We’re building product and service lists for UK companies. Get this one when it’s ready.
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01
Summary
SUB 51 OPERATIONS LTD is an active private limited company (company number 13275721) incorporated on 18 March 2021, 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 £3,429 and cash of £29k, with 1 employee on average. Net assets rose 107% on the prior period (−£47k).
Peer position · net assets
By net assets it sits in the upper half of 15,170 comparable companies in London (median £702, upper quartile £27k).
02
Ownership and control
- Sub 51 Holdings Ltd
- owns 75–100% of shares
- holds 75–100% of voting rights
- can appoint or remove directors
- Sebastian John Francis Newall
- owns 75–100% of shares
- holds 75–100% of voting rights
- can appoint or remove directors
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 20215 yrs ago
- Next accounts due
- 31 December 2026in 69 days
- Confirmation statement due
- 1 April 2027in 160 days
Due dates are expected from Companies House filing rules; confirm on the official register before relying on them.
04
Activity
- SIC 62012
- Business and domestic software development
- SIC 74909
- Other professional, scientific and technical activities n.e.c.
- Accounts type
- Total Exemption Full
- Size band
- MicroCompanies Act thresholds
05
Financials
£29k
−86%vs Mar 2024Not reported
1
No changevs Mar 2024| Period end | Net assets | Cash | Debtors | Creditors <1y | Turnover | Profit | Employees |
|---|---|---|---|---|---|---|---|
| 31 March 2025 | £3,429 | £29k | £1,366 | — | — | — | 1 |
| 31 March 2024 | −£47k | £209k | £10k | — | — | — | 1 |
Cash per employee£29kCash ÷ 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
- Net assets above zeroNet assets £3,429 at 31 March 2025
- Net assets up 10% or more on the prior period+107.3% vs prior period
- Incorporated five or more years agoIncorporated 18 March 2021
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
- Confirmation statement duein 160 days
- Next accounts duein 69 days
- Accounts period endNet assets £3,429 · small accounts
- Accounts period endNet liabilities £47k · small accounts
- Incorporated
08
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All companies incorporated on 18 March 2021 · in Mar 2021.
09
Reminders for SUB 51 OPERATIONS LTD
Get an email before each filing deadline — accounts and confirmation statement — so nothing is late.