SERO TECHNOLOGIES LIMITED
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Next accounts due
2026-09-30 (in 4mo)
Last filed for 2024-12-31
Confirmation statement due
2026-11-22 (in 6mo)
Last made up 2025-11-08
Watchouts
Cash
£4M
+201.8% highest in 6 filed years
Net assets
£5M
+130.5% highest in 4 filed years
Employees
72
-13.3% vs 2023
Profit before tax
—
Period ending 2024-12-31
Watchouts
Facts from the Companies House register and the latest accounts — not a rating
-
3 officer resignations in last 12 months
Multiple officers have left the board recently — see the People section for who.
-
2 PSCs ceased in last 24 months
Significant control changed hands — see the Ownership section.
Net assets
6-year trend · vs Industrials median
Accounts
6-year trend · latest reflected 2024-12-31
| Metric | Trend | 2019-12-31 | 2020-12-31 | 2021-12-31 | 2022-12-31 | 2023-12-31 | 2024-12-31 |
|---|---|---|---|---|---|---|---|
| Turnover | — | — | — | — | — | — | |
| Operating profit | — | — | — | — | — | — | |
| Profit before tax | — | — | — | — | — | — | |
| Net profit | — | — | — | -£586,456 | -£4,874,374 | -£5,322,050 | |
| Cash | £56,416 | £36,798 | £141,119 | £104,829 | £1,377,667 | £4,158,004 | |
| Total assets less current liabilities | £703 | -£199,488 | — | — | £2,129,183 | £4,907,982 | |
| Net assets | — | — | — | — | £2,129,183 | £4,907,982 | |
| Equity | £703 | -£199,488 | — | — | £2,129,183 | £4,907,982 | |
| Average employees | 6 | 3 | — | 6 | 83 | 72 | |
| Wages | — | — | — | £0 | — | — | |
| Directors' remuneration | — | — | — | — | — | — |
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
Year-on-year
FY2023 → FY2024 · period ending 2024-12-31 vs 2023-12-31
-
Turnover
—
Not reported
-
Cash
+201.8%
£1,377,667 £4,158,004
highest in 6 filed years
-
Net assets
+130.5%
£2,129,183 £4,907,982
-
Employees
-13.3%
83 72
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
Ratios
Computed from the line items above — sparklines read oldest → newest
| Ratio | Trend | 2019-12-31 | 2020-12-31 | 2021-12-31 | 2022-12-31 | 2023-12-31 | 2024-12-31 |
|---|---|---|---|---|---|---|---|
| Current ratio | — | — | — | — | 1.28x | 3.19x |
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 1 time since incorporation
- SERO TECHNOLOGIES LIMITED 2020-05-06 → present
- SERO ENERGY LIMITED 2017-08-23 → 2020-05-06
Audit & accounting basis
- Accounting basis
- FRS 102 §1A
- Reporting scope
- Consolidated group
- Abridged
- Yes — abridged accounts (limited disclosure)
- Auditor
- Andrew Howells of Azets Audit Services
- Audit opinion
- Unqualified (clean)
- Going concern
- Affirmed
“The group has incurred losses of £5.3m for the year ended 31 December 2024. During the year the group raised £7.5m in additional funding and subsequent to 31 December 2024 the group has the option to draw down £2.5m of further additional funding. The directors have prepared long term forecasts for a period in excess of 12 months from the date of approval of the financial statements, those forecasts take account of this funding and reasonably plausible downsides. The forecasts show that the group has sufficient funds to continue to meet its liabilities as they fall due for at least 12 months from the date of approval of the financial statements. On the basis of those forecasts the directors have concluded that the going concern basis of accounting is appropriate.”
Group structure
- SERO TECHNOLOGIES LIMITED · parent
- Sero Life Limited 100%
- Sero BEE Limited 100%
Significant events
- “During the year the group raised £7.5m in additional funding and subsequent to 31 December 2024 the group has the option to draw down £2.5m of further additional funding.”
Auditor, going-concern and subsidiary information is drawn from the narrative of the latest annual accounts. About these numbers
People
6 active · 5 resigned
| Name | Role | Appointed | Born | Nationality |
|---|---|---|---|---|
| HEWETT, Amy | Secretary | 2025-05-15 | — | — |
| BEEVERS, Kevin Graham | Director | 2023-02-01 | Jan 1968 | Welsh |
| BURTON, Matthew James | Director | 2021-12-21 | Apr 1984 | British |
| SANDYS, Laura | Director | 2024-09-26 | Jun 1964 | British |
| WILLIAMS, David James, Dr | Director | 2017-08-23 | Feb 1959 | British |
| WILLIAMS, James Leigh | Director | 2018-07-04 | Jun 1985 | British |
Show 5 resigned officers
| Name | Role | Appointed | Resigned |
|---|---|---|---|
| EVANS, Holly | Secretary | 2020-01-15 | 2025-05-15 |
| MAHER, Gearoid William | Director | 2021-12-21 | 2022-06-08 |
| PILLAI, Katherine Ruth | Director | 2025-04-14 | 2025-06-18 |
| RENDEL, Andrew Thomas | Director | 2022-06-08 | 2025-04-14 |
| SUTTON, Andrew David George | Director | 2019-03-18 | 2026-04-30 |
Ownership
Persons with significant control
| Name | Kind | Nature of control | Notified | Status |
|---|---|---|---|---|
| Legal & General Capital Investments Limited | Corporate entity | Shares 25–50%, Voting 25–50% | 2024-12-11 | Ceased 2026-02-16 |
| Carlyle Trust Limited(The) | Corporate entity | Shares 25–50%, Voting 25–50% | 2024-12-11 | Ceased 2026-02-16 |
| Mr James Leigh Williams | Individual | Shares 75–100% | 2018-07-04 | Ceased 2018-11-30 |
| Dr David James Williams | Individual | Shares 75–100%, Voting 75–100%, Appoints directors | 2017-08-23 | Ceased 2018-07-04 |
Filing timeline
Last 20 of 92 total filings
Material constitutional events — rename, articles re-file, resolution
- 2026-02-23 MA Memorandum articles
- 2026-02-23 RESOLUTIONS Resolution
- 2024-12-27 RESOLUTIONS Resolution
- 2024-12-27 MA Memorandum articles
| Date | Type | Category | Description | |
|---|---|---|---|---|
| 2026-05-01 | TM01 | officers | Termination director company with name termination date | |
| 2026-03-25 | PSC08 | persons-with-significant-control | Notification of a person with significant control statement | |
| 2026-03-18 | PSC07 | persons-with-significant-control | Cessation of a person with significant control | |
| 2026-03-18 | PSC07 | persons-with-significant-control | Cessation of a person with significant control | |
| 2026-02-23 | MA | incorporation | Memorandum articles | |
| 2026-02-23 | RESOLUTIONS | resolution | Resolution | |
| 2026-02-18 | MR01 | mortgage | Mortgage create with deed with charge number charge creation date | |
| 2026-02-17 | SH01 | capital | Capital allotment shares | |
| 2025-11-17 | CS01 | confirmation-statement | Confirmation statement with updates | |
| 2025-10-02 | RP01SH01 | miscellaneous | Legacy | |
| 2025-06-18 | TM01 | officers | Termination director company with name termination date | |
| 2025-05-29 | AA | accounts | Accounts with accounts type group | |
| 2025-05-15 | AP03 | officers | Appoint person secretary company with name date | |
| 2025-05-15 | TM02 | officers | Termination secretary company with name termination date | |
| 2025-04-14 | AP01 | officers | Appoint person director company with name date | |
| 2025-04-14 | TM01 | officers | Termination director company with name termination date | |
| 2024-12-27 | RESOLUTIONS | resolution | Resolution | |
| 2024-12-27 | MA | incorporation | Memorandum articles | |
| 2024-12-23 | PSC02 | persons-with-significant-control | Notification of a person with significant control | |
| 2024-12-23 | PSC02 | persons-with-significant-control | Notification of a person with significant control |
Public-record activity
Raw counts from Companies House — last 12–24 months
- Filings
- 14
- Capital events
- 1
- Officers appointed
- 1
- Officers resigned
- 3
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.