Annual accounts
Small accounts
30/09/2027Filing deadline
- Next accounts made up to
- 31/12/2026
- Last accounts made up to
- 31/12/2025
Reference data exactly as held at Companies House.
The 4 most recent documents filed at Companies House.
Accounts for a small company made up to 2025-12-31
Change of details for Mr Josh Leahy as a person with significant control on 2026-02-04
Secretary's details changed for Mr Josh Leahy on 2026-02-04
Termination of appointment of Bengt Aronsson as a director on 2025-11-10
What Pre-Score will tell you

The two filings Companies House requires every year, and where each one stands against its deadline today.
Small accounts
30/09/2027Filing deadline
Confirms the registry record is up to date
24/10/2026Filing deadline
The latest figures KOCKUM SONICS (UK) LIMITED filed. Okredo holds filed accounts data for 2021–2025; the year-by-year record is on the financials page.
Net Assets
2024: £343.29K
Total Assets
2024: £597.51K
Cash in Bank
2024: £206.99K
Total Liabilities
2024: £254.22K
Employees
2024: 5
Of the 4 measures with an earlier filing to compare against, 4 rose. Total assets moved furthest, up 66.29% on 2024. See the full financial analysis for KOCKUM SONICS (UK) LIMITED.
The full financial record
Four ways through KOCKUM SONICS (UK) LIMITED's filed accounts — the year-by-year numbers, the compound rates and the ratios behind them.
Headcount as reported to Companies House for 2021–2025.
| Year | Employees | Change |
|---|---|---|
| 2025 | 6 | +1 |
| 2024 | 5 | 0 |
| 2023 | 5 | +1 |
| 2022 | 4 | 0 |
| 2021 | 4 | – |
Reported employee count increased from 4 in 2021 to 6 in 2025. 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 |
|---|---|---|---|
| Director | 01/02/1992–26/04/1998 | 0 | |
| Director | 04/03/1997–30/06/1999 | 1 | |
| Director | 14/07/1998–09/07/2012 | 0 | |
| Director | 30/06/1999–Present | 0 | |
| Director | 22/09/2014–10/11/2025 | 0 | |
| Secretary | 01/02/1992–26/04/1998 | 0 | |
| Director | 10/11/2025–Present | 0 | |
| Director | 03/07/2012–22/09/2014 | 0 | |
| Secretary | 14/07/1998–16/09/2025 | 0 | |
| Secretary | 16/09/2025–Present | 0 |
Individuals or entities with significant control over the company, as declared to Companies House.
| Person | Period | Connected companies |
|---|---|---|
| 06/04/2016–16/09/2025 | 0 | |
| 06/04/2016–Present | 0 | |
| 08/12/2022–Present | 0 | |
| 16/09/2025–Present | 0 |
Every document on the Companies House record, newest first.
Accounts for a small company made up to 2025-12-31
Change of details for Mr Josh Leahy as a person with significant control on 2026-02-04
Secretary's details changed for Mr Josh Leahy on 2026-02-04
Termination of appointment of Bengt Aronsson as a director on 2025-11-10
Appointment of Mr Henrik Rosenqvist as a director on 2025-11-10
Change of details for Mr Josh Leahy as a person with significant control on 2025-11-12
Confirmation statement made on 2025-10-10 with updates
Cessation of Anthony Barbato as a person with significant control on 2025-09-16
Notification of Josh Leahy as a person with significant control on 2025-09-16
Appointment of Mr Josh Leahy as a secretary on 2025-09-16
Termination of appointment of Anthony Barbato as a secretary on 2025-09-16
Accounts for a small company made up to 2024-12-31
Showing 12 of 23 filings
See when the next accounts and confirmation statement are due
98 UK companies are similar to KOCKUM SONICS (UK) LIMITED, sharing the same company status (Active), the same industry sector and activity group (Manufacture of electronic measuring testing etc. equipment not for industrial process control) and a comparable number of employees. The 5 closest matches are shown below to help you compare competitors and industry peers.
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A short description of the company, written from its Companies House record.
KOCKUM SONICS (UK) LIMITED is a private limited company registered in the United Kingdom, based in Unit 7 Leighton Industrial Park, Billington Road, Leighton Buzzard, Bedfordshire LU7 4AJ. Companies House classifies its business as Manufacture of electronic measuring testing etc. equipment not for industrial process control, one of 2 SIC classifications on its record. It has been on the register for 37 years 8 months.
The register currently records it as active. Its 2025 accounts report net assets of £481.10K and 6 employees.
Answered from this company's own registry record and filed figures.
Companies House records KOCKUM SONICS (UK) LIMITED under 2 registered business activities: Manufacture of electronic measuring testing etc. equipment not for industrial process control (26.51/1 - SIC 2007) and Other business support service activities n.e.c. security (82.99 - SIC 2007).
KOCKUM SONICS (UK) LIMITED is recorded as active on the Companies House register, and has been on it since 03/02/1989.
The most recent accounts Okredo holds cover 2025 and report net assets of £481.10K, total assets of £993.57K, cash in bank of £210.12K and total liabilities of £512.47K.
The most recent document on the record is dated 24/02/2026: Accounts for a small company made up to 2025-12-31, 7 months ago.
On the current registry record, accounts are due by 30/09/2027 and the next confirmation statement is due by 24/10/2026.
Companies House lists 10 officers (3 currently in post) and 4 people with significant control (3 current).