Annual accounts
Total Exemption Full accounts
30/09/2026Filing deadline
- Next accounts made up to
- 31/12/2025
- Last accounts made up to
- 30/09/2024
Reference data exactly as held at Companies House.
The 4 most recent documents filed at Companies House.
Total exemption full accounts made up to 2025-12-31
Appointment of Michael Read as a director on 2026-05-20
Appointment of David Bradley as a director on 2026-05-20
Change of details for Neptune Sonar (Yorkshire) Limited as a person with significant control on 2024-12-09
What Pre-Score will tell you

The two filings Companies House requires every year, and where each one stands against its deadline today.
Total Exemption Full accounts
30/09/2026Filing deadline
Confirms the registry record is up to date
The latest figures NEPTUNE SONAR LIMITED filed. Okredo holds filed accounts data for 2021–2024; the year-by-year record is on the financials page.
Net Assets
2023: £3.18M
Total Assets
2023: £3.13M
Cash in Bank
2023: £458.41K
Total Liabilities
2023: £633.61K
Employees
2023: 41
Of the 4 measures with an earlier filing to compare against, 3 rose and 1 fell. Cash in bank moved furthest, up 92.02% on 2023. See the full financial analysis for NEPTUNE SONAR LIMITED.
The full financial record
Three ways through NEPTUNE SONAR LIMITED's filed accounts — the year-by-year numbers, the compound rates and the ratios behind them.
Headcount as reported to Companies House for 2021–2024.
| Year | Employees | Change |
|---|---|---|
| 2024 | 39 | -2 |
| 2023 | 41 | -6 |
| 2021 | 47 | – |
Reported employee count decreased from 47 in 2021 to 39 in 2024. See how headcount moved alongside the reported financials.
Credit report
It is a professional assessment of the company 's performance, revealing company's potential and risks, showing it's past experiences and revealing future prospects.
Directors, secretaries and other appointed officers, with the period each has served.
| Person | Role | Period | Connected companies |
|---|---|---|---|
| Corporate Secretary | 20/01/2025–Present | 479 | |
| Director | 09/12/2024–Present | 4 | |
| Director | 28/07/2010–23/09/2011 | 15 | |
| Director | 21/06/2013–30/05/2025 | 3 | |
| Director | 28/07/2010–23/09/2011 | 0 | |
| Director | 21/07/2025–Present | 1 | |
| Director | 14/12/2023–Present | 1 | |
| Director | 20/05/2026–Present | 4 | |
| Director | 21/07/2025–20/05/2026 | 2 | |
| Director | 01/03/2015–Present | 0 | |
| Director | 20/05/2026–Present | 2 |
Individuals or entities with significant control over the company, as declared to Companies House.
| Person | Period | Connected companies |
|---|---|---|
| 06/04/2016–Present | 0 | |
| 06/04/2016–09/12/2024 | 4 | |
| 06/04/2016–Present | 4 |
Every document on the Companies House record, newest first.
Total exemption full accounts made up to 2025-12-31
Appointment of Michael Read as a director on 2026-05-20
Appointment of David Bradley as a director on 2026-05-20
Change of details for Neptune Sonar (Yorkshire) Limited as a person with significant control on 2024-12-09
Director's details changed for Dr Neil Dearing on 2021-11-19
Current accounting period extended from 2025-09-30 to 2025-12-31
Director's details changed for Dr Neil Dearing on 2025-10-09
Director's details changed for Mr Garry Scott on 2025-10-09
Director's details changed for Dr Neil Dearing on 2025-09-04
Confirmation statement made on 2025-07-25 with no updates
Appointment of Craig Churchill as a director on 2025-07-21
Appointment of Dr Samuel Parry as a director on 2025-07-21
Showing 12 of 29 filings
See when the next accounts and confirmation statement are due
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A short description of the company, written from its Companies House record.
NEPTUNE SONAR LIMITED is a private limited company registered in the United Kingdom, based in 7th Floor 3 More London Riverside, London SE1 2AQ. Companies House classifies its business as Other professional scientific and technical activities n.e.c.. It has been on the register for 36 years 2 months.
The register currently records it as active. Its 2024 accounts report net assets of £3.51M and 39 employees.
Answered from this company's own registry record and filed figures.
Companies House records NEPTUNE SONAR LIMITED under one registered business activity: Other professional scientific and technical activities n.e.c. (74.90/9 - SIC 2007).
NEPTUNE SONAR LIMITED is recorded as active on the Companies House register, and has been on it since 25/07/1990.
The most recent accounts Okredo holds cover 2024 and report net assets of £3.51M, total assets of £3.47M, cash in bank of £880.22K and total liabilities of £620.93K.
The most recent document on the record is dated 15/09/2026: Total exemption full accounts made up to 2025-12-31, less than a month ago.
On the current registry record, accounts are due by 30/09/2026.
Companies House lists 11 officers (7 currently in post) and 3 people with significant control (2 current).