Annual accounts
Micro Entity accounts
31/12/2026Filing deadline
- Next accounts made up to
- 31/03/2026
- Last accounts made up to
- 31/03/2025
Reference data exactly as held at Companies House.
The 4 most recent documents filed at Companies House.
Termination of appointment of Julian Michael Stuart Attfield as a secretary on 2026-08-28
Confirmation statement made on 2026-03-10 with no updates
Appointment of Dr Philip Henrik Engell Brainin as a director on 2026-03-12
Micro company accounts made up to 2025-03-31
What Pre-Score will tell you

The two filings Companies House requires every year, and where each one stands against its deadline today.
Micro Entity accounts
31/12/2026Filing deadline
Confirms the registry record is up to date
The latest figures ISOMAB LTD filed. Okredo holds filed accounts data for 2023–2026; the year-by-year record is on the financials page.
Net Assets
2025: £3.84M
Total Assets
2025: £4.17M
Total Liabilities
2025: £324.94K
Employees
2025: 9
Of the 3 measures with an earlier filing to compare against, 3 fell. Total assets moved furthest, down 99.75% on 2025. See the full financial analysis for ISOMAB LTD.
The full financial record
Four ways through ISOMAB LTD's filed accounts — the year-by-year numbers, the compound rates and the ratios behind them.
Headcount as reported to Companies House for 2023–2026.
| Year | Employees | Change |
|---|---|---|
| 2026 | 0 | -9 |
| 2025 | 9 | +4 |
| 2024 | 5 | +1 |
| 2023 | 4 | – |
Reported employee count decreased from 4 in 2023 to 0 in 2026. 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 | 19/12/2022–05/09/2024 | 5 | |
| Corporate Director | 12/02/2024–Present | 158 | |
| Director | 01/07/2022–Present | 21 | |
| Director | 11/03/2022–10/04/2023 | 7 | |
| Director | 01/07/2022–17/08/2025 | 5 | |
| Director | 11/03/2022–Present | 4 | |
| Director | 01/04/2024–Present | 7 | |
| Director | 11/07/2022–10/04/2023 | 0 | |
| Director | 05/09/2024–04/06/2026 | 1 | |
| Director | 04/06/2026–Present | 11 | |
| Director | 12/02/2024–Present | 0 | |
| Secretary | 24/07/2025–28/08/2026 | 0 | |
| Director | 17/02/2025–Present | 0 | |
| Director | 12/03/2026–Present | 0 |
Individuals or entities with significant control over the company, as declared to Companies House.
| Person | Period | Connected companies |
|---|---|---|
| 11/03/2022–12/02/2024 | 4 | |
| 11/03/2022–Present | 4 |
Every document on the Companies House record, newest first.
Termination of appointment of Julian Michael Stuart Attfield as a secretary on 2026-08-28
Confirmation statement made on 2026-03-10 with no updates
Appointment of Dr Philip Henrik Engell Brainin as a director on 2026-03-12
Micro company accounts made up to 2025-03-31
Termination of appointment of Jackie Sarah Mcken as a director on 2025-08-17
Appointment of Mr Julian Michael Stuart Attfield as a secretary on 2025-07-24
Second filing of Confirmation Statement dated 2025-03-10
Second filing of a statement of capital following an allotment of shares on 2024-02-12
Confirmation statement made on 2025-03-10 with updates
Statement of capital following an allotment of shares on 2024-12-05
Statement of capital following an allotment of shares on 2025-01-25
Second filing of a statement of capital following an allotment of shares on 2024-02-12
Showing 12 of 48 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.
ISOMAB LTD is a private limited company registered in the United Kingdom, based in St Johns Innovation Centre, Cowley Road, Cambridge CB4 0WS. Companies House classifies its business as Research and experimental development on biotechnology. It has been on the register for 4 years 6 months.
The register currently records it as active. Its 2026 accounts report net assets of £590.62K and 0 employees.
Answered from this company's own registry record and filed figures.
Companies House records ISOMAB LTD under one registered business activity: Research and experimental development on biotechnology (72.11 - SIC 2007).
ISOMAB LTD is recorded as active on the Companies House register, and has been on it since 11/03/2022.
The most recent accounts Okredo holds cover 2026 and report net assets of £590.62K, total assets of £10.58K and total liabilities of £163.48K.
The most recent document on the record is dated 10/09/2026: Termination of appointment of Julian Michael Stuart Attfield as a secretary on 2026-08-28, less than a month ago.
On the current registry record, accounts are due by 31/12/2026.
Companies House lists 14 officers (8 currently in post) and 2 people with significant control (1 current).