ALTOS LABS UK LIMITED
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Next accounts due
2027-09-30 (in 1y)
Last filed for 2025-12-31
Confirmation statement due
2026-07-13 (in 2mo)
Last made up 2025-06-29
Watchouts
None on the register
Cash
£23M
+21.5% vs 2024
Net assets
£41M
-14.1% vs 2024
Employees
144
0% vs 2024
Profit before tax
-£86M
-3.9% vs 2024
Net assets
2-year trend · vs Health Care median
Accounts
2-year trend · latest reflected 2025-12-31
| Metric | Trend | 2024-12-31 | 2025-12-31 |
|---|---|---|---|
| Turnover | — | — | |
| Operating profit | -£80,115,910 | -£84,996,133 | |
| Profit before tax | -£82,441,990 | -£85,684,105 | |
| Net profit | -£73,928,361 | -£85,684,105 | |
| Cash | £19,286,290 | £23,425,365 | |
| Total assets less current liabilities | £59,500,191 | £52,451,172 | |
| Net assets | £47,970,022 | £41,218,972 | |
| Equity | £47,970,022 | £41,218,972 | |
| Average employees | 144 | 144 | |
| Wages | £25,193,791 | £28,393,566 |
Values shown as filed in the company's annual accounts. — indicates the figure wasn't present under that line item in that period. About these numbers
Ratios
Computed from the line items above — sparklines read oldest → newest
| Ratio | Trend | 2024-12-31 | 2025-12-31 |
|---|---|---|---|
| Return on capital employed | -134.6% | -162.0% | |
| Gearing (liabilities / total assets) | 32.4% | 41.1% | |
| Current ratio | 4.14x | 2.86x | |
| Interest cover | -24.39x | -50.79x |
Margins divide P&L lines by turnover. Gearing is liabilities over total assets. Current ratio is current assets over creditors falling due within one year. Interest cover is operating profit over absolute finance costs. Sector-distribution context coming next.
Audit & accounting basis
- Accounting basis
- FRS 101
- Reporting scope
- Standalone (parent only)
- Auditor
- Ernst & Young LLP
- Audit opinion
- Unqualified (clean)
- Going concern
- Affirmed
“Altos Labs UK limited is reliant on funding received from its parent company Altos Labs, Inc. and has no external income. Altos Labs, Inc. has confirmed that it will provide the necessary support for the period until 31 December 2027 being the going concern review period assessed by the directors to enable the Company to settle its liabilities as they fall due.”
Significant events
- “As of December 31, 2025, the amount owed by group undertakings was $10.9 million which has been repaid in full in February 2026.”
- “In February 2026, the U.S. parent undertaking issued a new $55 million intercompany note in consideration of the issuance of one share, which accrues interest at a rate of 6% with full amount due by 17 April 2027.”
Auditor, going-concern and subsidiary information is drawn from the narrative of the latest annual accounts. About these numbers
People
4 active · 0 resigned
| Name | Role | Appointed | Born | Nationality |
|---|---|---|---|---|
| OAKWOOD CORPORATE SECRETARY LIMITED | Corporate Secretary | 2021-06-30 | — | — |
| JOHANSSON, Karl | Director | 2021-11-22 | Sep 1949 | American |
| KLAUSNER, Richard | Director | 2021-06-30 | Dec 1951 | American |
| SIN, Kevin | Director | 2024-12-05 | Feb 1973 | American |
Ownership
Persons with significant control
| Name | Kind | Nature of control | Notified | Status |
|---|---|---|---|---|
| Richard Klausner | Individual | Shares 75–100%, Voting 75–100%, Appoints directors | 2021-06-30 | Ceased 2021-10-20 |
Filing timeline
Last 20 of 37 total filings
| Date | Type | Category | Description | |
|---|---|---|---|---|
| 2026-05-10 | AA | accounts | Accounts with accounts type full | |
| 2026-03-03 | SH01 | capital | Capital allotment shares | |
| 2025-10-23 | SH01 | capital | Capital allotment shares | |
| 2025-07-08 | CS01 | confirmation-statement | Confirmation statement with updates | |
| 2025-07-08 | CH01 | officers | Change person director company with change date | |
| 2025-07-08 | CH01 | officers | Change person director company with change date | |
| 2025-06-12 | SH01 | capital | Capital allotment shares | |
| 2025-06-10 | SH01 | capital | Capital allotment shares | |
| 2025-04-08 | AA | accounts | Accounts with accounts type full | |
| 2025-02-07 | SH01 | capital | Capital allotment shares | |
| 2024-12-12 | AP01 | officers | Appoint person director company with name date | |
| 2024-09-27 | SH01 | capital | Capital allotment shares | |
| 2024-07-16 | SH01 | capital | Capital allotment shares | |
| 2024-07-15 | CH01 | officers | Change person director company with change date | |
| 2024-07-14 | AA | accounts | Accounts with accounts type full | |
| 2024-07-12 | CS01 | confirmation-statement | Confirmation statement with updates | |
| 2024-06-11 | SH01 | capital | Capital allotment shares | |
| 2023-12-07 | SH01 | capital | Capital allotment shares | |
| 2023-08-25 | SH01 | capital | Capital allotment shares | |
| 2023-08-23 | MR04 | mortgage | Mortgage satisfy charge full |
Public-record activity
Raw counts from Companies House — last 12–24 months
- Filings
- 8
- Capital events
- 8
- Officers appointed
- 0
- Officers resigned
- 0
last 12 months
last 24 months
last 12 months
last 12 months
Direct counts from the register. No score, no rating — see the Filing timeline for the underlying events.
Year-on-year
FY2024 → FY2025 · period ending 2025-12-31 vs 2024-12-31
-
Turnover
—
Not reported
-
Cash
+21.5%
£19,286,290 £23,425,365
-
Net assets
-14.1%
£47,970,022 £41,218,972
-
Employees
0%
144 144
-
Operating profit
-6.1%
-£80,115,910 -£84,996,133
-
Profit before tax
-3.9%
-£82,441,990 -£85,684,105
-
Wages
+12.7%
£25,193,791 £28,393,566
Each % is (latest − prior) ÷ |prior| for the line item as filed. The comparison is only shown when the latest and prior accounts cover broadly equal-length periods — short or long stubs (typical around incorporation or a year-end change) are suppressed rather than misrepresented. Lines a company doesn't report are omitted. About these numbers