BW ESS DEVELOPMENT UK LIMITED
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Cash
£3M
-36.5% vs 2023
Net assets
£6.2M
-0.7% vs 2023
Employees
11
+22.2% highest in 6 filed years
Profit before tax
-£905K
+38.8% vs 2023
Watchouts
Facts from the Companies House register and the latest accounts — not a rating
-
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 · Δ = latest vs prior filed period · 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 | Δ vs prior |
|---|---|---|---|---|---|---|---|---|
| Turnover | — | — | — | — | — | £1,593,978 | — | |
| Operating profit | — | — | — | — | -£1,615,422 | -£959,985 | +40.6% | |
| Profit before tax | — | — | — | — | -£1,479,857 | -£905,070 | +38.8% | |
| Net profit | — | — | — | — | -£558,819 | -£753,049 | -34.8% | |
| Cash | — | £578,970 | £6,282,617 | £1,471,324 | £4,655,769 | £2,958,309 | -36.5% | |
| Total assets less current liabilities | £6,762 | £125,083 | £6,143,027 | £4,286,976 | £6,227,725 | £6,182,255 | -0.7% | |
| Net assets | £6,762 | £80,149 | £6,107,863 | £4,286,543 | £6,227,725 | £6,182,255 | -0.7% | |
| Equity | £6,762 | £80,149 | £6,107,863 | £4,286,543 | — | £6,182,255 | — | |
| Average employees | 2 | 2 | 3 | 6 | 9 | 11 | +22.2% | |
| Wages | — | — | — | — | £1,099,968 | £1,272,689 | +15.7% | |
| Directors' remuneration | — | — | — | — | £627,776 | £368,575 | -41.3% |
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 | 2021-12-31 | 2022-12-31 | 2023-12-31 | 2024-12-31 |
|---|---|---|---|---|---|---|---|
| Operating margin | — | — | — | — | — | -60.2% | |
| Net margin | — | — | — | — | — | -47.2% | |
| Return on capital employed | — | — | — | — | -25.9% | -15.5% | |
| Gearing (liabilities / total assets) | — | — | — | — | 5.0% | 6.7% | |
| Current ratio | — | — | — | — | 17.14x | 11.19x |
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 1 time since incorporation
- BW ESS DEVELOPMENT UK LIMITED 2025-01-02 → present
- PENSO POWER LIMITED 2017-12-22 → 2025-01-02
Audit & accounting basis
- Accounting basis
- IFRS
- Reporting scope
- Standalone (parent only)
- Auditor
- MHA
- Audit opinion
- Unqualified (clean)
- Going concern
- Affirmed
“In auditing the financial statements, we have concluded that the directors' use of the going concern basis of accounting in the preparation of the financial statements is appropriate. Based on the work we have performed, we have not identified any material uncertainties relating to events or conditions that, individually or collectively, may cast significant doubt on the Company's ability to continue as a going concern for a period of at least twelve months from when the financial statements are authorised for issue.”
Group structure
- BW ESS DEVELOPMENT UK LIMITED · parent
- Bramley Battery Storage Limited 49%
- Penso Power Africa Limited 52%
- Welbar Energy Storage Limited 20.29%
- Berkswell Battery Storage Limited 100%
- ACL SPV 1 S.r.l. 33.33%
- Elstree Battery Storage Limited 100%
- Thatcham Energy Storage Limited 100%
Significant events
- “On 2 January 2025, the company's name was changed from Penso Power Limited to BW ESS Development UK Limited.”
- “In February 2025, the company's subsidiary Thatcham Energy Storage Limited was voluntarily struck off the register, and a final gazette notice was issued.”
- “In November 2025, the company's subsidiary Penso Power Africa Limited was also voluntarily struck off the register, with a final gazette notice issued.”
- “In January 2025, the company transferred its entire shareholding of 33 ordinary shares in ACL SPV 1 S.r.L. to BW ESS Italy S.r.L., a related party, for a total consideration of €600,000 (approximately £500,751 equivalent).”
- “In March 2025, the company transferred its entire shareholding of 10,000 ordinary shares in Bramley Battery Storage Limited to BW ESS UK Limited, a related party, for a total consideration of £1.”
- “In August 2025, the company transferred its entire shareholding of 100 ordinary shares in Berkswell Battery Storage Limited to Berkswell Holding UK Limited, a related party, for a total consideration of £100.”
- “In August 2025, the company transferred its entire shareholding of 5,000 ordinary shares in Welbar Energy Storage Limited to Hams Hall Holding UK Limited, for a total consideration of £0.50.”
Auditor, going-concern and subsidiary information is drawn from the narrative of the latest annual accounts. About these numbers
People
5 active · 7 resigned
| Name | Role | Appointed | Born | Nationality |
|---|---|---|---|---|
| CHWEE, Chong Foon, Ms. | Secretary | 2024-12-13 | — | — |
| TEH, Linda Keat Luan, Ms. | Secretary | 2024-12-13 | — | — |
| BIRD & BIRD COMPANY SECRETARIES LIMITED | Corporate Secretary | 2024-12-10 | — | — |
| FORTH, Cordelia Clare | Director | 2026-03-27 | Sep 1984 | British |
| THWAITES, Richard Craig | Director | 2017-12-22 | Oct 1970 | British |
Show 7 resigned officers
| Name | Role | Appointed | Resigned |
|---|---|---|---|
| GAY, Gary Alvin | Director | 2017-12-22 | 2018-07-05 |
| JIA, Nan, Dr | Director | 2021-07-21 | 2024-10-11 |
| JIMENEZ CHAVES, Roberto | Director | 2024-01-29 | 2026-03-27 |
| MCALEAVEY, John Andrew, Mr. | Director | 2020-03-25 | 2023-09-22 |
| NYGARD, Erik Michael | Director | 2021-01-11 | 2021-12-23 |
| STROEMSOE, Erik | Director | 2021-10-21 | 2024-10-11 |
| WYBREW, John Bryan | Director | 2017-12-22 | 2024-10-11 |
Ownership
Persons with significant control
| Name | Kind | Nature of control | Notified | Status |
|---|---|---|---|---|
| Mr Andreas Sohmen-Pao | Individual | Significant influence | 2024-01-02 | Active |
| Bw Energy Storage Systems Pte. Ltd | Corporate entity | Shares 25–50% | 2021-11-15 | Ceased 2024-01-02 |
| Dr Nan Jia | Individual | Significant influence | 2021-07-16 | Ceased 2024-10-11 |
| Mr. John Andrew Mcaleavey | Individual | Significant influence | 2020-04-01 | Ceased 2024-03-05 |
| Mr Richard Craig Thwaites | Individual | Significant influence | 2019-02-01 | Ceased 2024-10-11 |
| Creation Energy Storage Limited | Corporate entity | Shares 25–50% | 2017-12-22 | Ceased 2019-02-01 |
| G2 Energy Developments Limited | Corporate entity | Shares 25–50% | 2017-12-22 | Ceased 2018-06-29 |
Filing timeline
Last 20 of 74 total filings
Material constitutional events — rename, articles re-file, resolution
- 2025-01-02 CERTNM Certificate change of name company PDF
- 2024-11-20 RESOLUTIONS Resolution
| Date | Type | Category | Description | |
|---|---|---|---|---|
| 2026-03-30 | TM01 | officers | Termination director company with name termination date | |
| 2026-03-30 | AP01 | officers | Appoint person director company with name date | |
| 2025-12-19 | AA | accounts | Accounts with accounts type full | |
| 2025-09-22 | CS01 | confirmation-statement | Confirmation statement with updates | |
| 2025-09-17 | CH01 | officers | Change person director company with change date | |
| 2025-07-18 | AD01 | address | Change registered office address company with date old address new address | |
| 2025-07-18 | AD03 | address | Move registers to sail company with new address | |
| 2025-07-17 | AD02 | address | Change sail address company with new address | |
| 2025-07-11 | RP04AP01 | officers | Second filing of director appointment with name | |
| 2025-06-09 | AD01 | address | Change registered office address company with date old address new address | |
| 2025-01-02 | CERTNM | change-of-name | Certificate change of name company | |
| 2025-01-02 | AD01 | address | Change registered office address company with date old address new address | |
| 2024-12-20 | AP03 | officers | Appoint person secretary company with name date | |
| 2024-12-20 | AP03 | officers | Appoint person secretary company with name date | |
| 2024-12-20 | AP04 | officers | Appoint corporate secretary company with name date | |
| 2024-11-20 | RESOLUTIONS | resolution | Resolution | |
| 2024-10-18 | TM01 | officers | Termination director company with name termination date | |
| 2024-10-18 | PSC07 | persons-with-significant-control | Cessation of a person with significant control | |
| 2024-10-18 | SH01 | capital | Capital allotment shares | |
| 2024-10-18 | PSC07 | persons-with-significant-control | Cessation of a person with significant control |
Public-record activity
Raw counts from Companies House — last 12–24 months
- Filings
- 9
- Capital events
- 1
- Officers appointed
- 1
- Officers resigned
- 1
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.