ADVENT BIOSERVICES LTD
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Cash
£352K
-5% lowest in 4 filed years
Net assets
£2.7M
-88.1% lowest in 4 filed years
Employees
97
+32.9% highest in 4 filed years
Profit before tax
-£19M
-304.4% vs 2023
Net assets
4-year trend · vs Health Care median
Accounts
4-year trend · Δ = latest vs prior filed period · latest reflected 2024-12-31
| Metric | Trend | 2019-12-31 | 2020-12-31 | 2023-12-31 | 2024-12-31 | Δ vs prior |
|---|---|---|---|---|---|---|
| Turnover | — | — | £20,351,410 | £18,616,351 | -8.5% | |
| Operating profit | — | — | £9,778,667 | -£15,810,279 | -261.7% | |
| Profit before tax | — | — | £9,531,423 | -£19,482,978 | -304.4% | |
| Net profit | — | — | £7,621,277 | -£20,375,998 | -367.4% | |
| Cash | £2,496,386 | £1,743,946 | £370,379 | £351,834 | -5% | |
| Total assets less current liabilities | £4,835,895 | £7,668,274 | £23,489,667 | £2,899,158 | -87.7% | |
| Net assets | — | £7,668,274 | £23,116,093 | £2,740,095 | -88.1% | |
| Equity | £4,835,895 | £7,668,274 | £23,116,093 | £2,740,095 | -88.1% | |
| Average employees | 11 | 21 | 73 | 97 | +32.9% | |
| Wages | — | — | £3,726,461 | £5,041,640 | +35.3% | |
| Directors' remuneration | — | — | £620,700 | £702,942 | +13.2% |
Values shown as filed in the company's annual accounts. — indicates the figure wasn't present under that line item in that period. The Δ column is the change from the prior filed period as a percentage of |prior|; lines a company doesn't report show —. About these numbers
Ratios
Computed from the line items above — sparklines read oldest → newest
| Ratio | Trend | 2019-12-31 | 2020-12-31 | 2023-12-31 | 2024-12-31 |
|---|---|---|---|---|---|
| Operating margin | — | — | 48.0% | -84.9% | |
| Net margin | — | — | 37.4% | -109.5% | |
| Return on capital employed | — | — | 41.6% | -545.3% | |
| Gearing (liabilities / total assets) | — | — | 10.7% | 46.4% | |
| Current ratio | — | — | 8.00x | 0.98x |
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.
Name history
Renamed 2 times since incorporation
- ADVENT BIOSERVICES LTD 2017-05-09 → present
- COGNATE BIOSERVICES LIMITED 2014-02-05 → 2017-05-09
- COGNATE BIOSCIENCE UK LIMITED 2013-10-03 → 2014-02-05
Audit & accounting basis
- Accounting basis
- FRS 102
- Reporting scope
- Standalone (parent only)
- Auditor
- Mercer & Hole LLP
- Audit opinion
- Unqualified (clean)
- Going concern
- Affirmed
“At the time of approving these financial statements, the director has a reasonable expectation that the Company will have adequate resources to continue operating for the foreseeable future. During the year, the Company wrote off a considerable related party debtor balance which has led to the significant loss. Without this write off, the Company would have had a profit before tax. Thus the director continues to adopt the going concern basis in preparing the financial statements.”
Significant events
- “On the 27 August 2025 Advent Bioservices Limited entered into a transaction for the sale of 100% of the Company's share capital to Northwest Biotherapeutics Inc..”
Auditor, going-concern and subsidiary information is drawn from the narrative of the latest annual accounts. About these numbers
People
2 active · 0 resigned
| Name | Role | Appointed | Born | Nationality |
|---|---|---|---|---|
| PIRE, Philippe Thomas George | Secretary | 2022-05-16 | — | — |
| POWERS, Linda Fairing | Director | 2013-10-03 | Oct 1955 | American |
Ownership
Persons with significant control
| Name | Kind | Nature of control | Notified | Status |
|---|---|---|---|---|
| Toucan Holdings Llc | Corporate entity | Shares 75–100% | 2019-12-30 | Active |
| Ms Linda Fairing Powers | Individual | Appoints directors | 2016-04-06 | Active |
Filing timeline
Last 20 of 36 total filings
| Date | Type | Category | Description | |
|---|---|---|---|---|
| 2025-12-31 | AA | accounts | Accounts with accounts type full | |
| 2025-10-17 | CS01 | confirmation-statement | Confirmation statement with updates | |
| 2025-03-04 | AA | accounts | Accounts with accounts type full | |
| 2024-10-15 | CS01 | confirmation-statement | Confirmation statement with updates | |
| 2023-12-29 | AA | accounts | Accounts with accounts type total exemption full | |
| 2023-10-16 | CS01 | confirmation-statement | Confirmation statement with no updates | |
| 2022-10-11 | CS01 | confirmation-statement | Confirmation statement with updates | |
| 2022-09-29 | AA | accounts | Accounts with accounts type total exemption full | |
| 2022-05-26 | AP03 | officers | Appoint person secretary company with name date | |
| 2022-01-20 | AA | accounts | Accounts with accounts type total exemption full | |
| 2021-10-20 | CS01 | confirmation-statement | Confirmation statement with no updates | |
| 2021-02-24 | AD01 | address | Change registered office address company with date old address new address | |
| 2020-12-29 | AA | accounts | Accounts with accounts type total exemption full | |
| 2020-11-25 | CS01 | confirmation-statement | Confirmation statement with updates | |
| 2020-01-02 | PSC02 | persons-with-significant-control | Notification of a person with significant control | |
| 2019-11-20 | CS01 | confirmation-statement | Confirmation statement with no updates | |
| 2019-09-30 | AA | accounts | Accounts with accounts type total exemption full | |
| 2018-12-18 | AA | accounts | Accounts with accounts type total exemption full | |
| 2018-10-11 | CS01 | confirmation-statement | Confirmation statement with no updates | |
| 2018-01-02 | AD01 | address | Change registered office address company with date old address new address |
Public-record activity
Raw counts from Companies House — last 12–24 months
- Filings
- 2
- Capital events
- 0
- 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.