PORTSWIGGER LTD
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Cash
£6.4M
Latest balance sheet
Net assets
£9.1M
Equity attributable
Employees
140
Average over period
Profit before tax
£13M
Period ending 2023-12-31
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.
Net assets
1-year trend · vs Technology median
Accounts
1-year trend · Δ = latest vs prior filed period · latest reflected 2025-12-31
| Metric | Trend | 2023-12-31 | Δ vs prior |
|---|---|---|---|
| Turnover | £35,988,500 | — | |
| Operating profit | £12,473,076 | — | |
| Profit before tax | £12,604,811 | — | |
| Net profit | £10,226,105 | — | |
| Cash | £6,384,062 | — | |
| Total assets less current liabilities | £13,421,070 | — | |
| Net assets | £9,129,387 | — | |
| Equity | £9,129,387 | — | |
| Average employees | 140 | — | |
| Wages | £12,103,496 | — | |
| Directors' remuneration | £615,354 | — |
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 —. Year-on-year comparison hidden: this filing's period length differs materially from the prior year. About these numbers
Ratios
Computed from the line items above — sparklines read oldest → newest
| Ratio | Trend | 2023-12-31 |
|---|---|---|
| Operating margin | 34.7% | |
| Net margin | 28.4% | |
| Return on capital employed | 92.9% | |
| Current ratio | 3.33x |
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 102
- Reporting scope
- Consolidated group
- Auditor
- BDO LLP
- Audit opinion
- Unqualified (clean)
- Going concern
- Affirmed
“After making enquiries, and on the basis outlined in note 2.3 to the financial statements, the Directors have a reasonable expectation that the Group has adequate resources to continue in operational existence for the foreseeable future. For this reason, they continue to adopt the going concern basis in preparing the financial statements.”
Group structure
- PORTSWIGGER LTD · parent
- PortSwigger LLC 100%
Auditor, going-concern and subsidiary information is drawn from the narrative of the latest annual accounts. About these numbers
People
7 active · 6 resigned
| Name | Role | Appointed | Born | Nationality |
|---|---|---|---|---|
| DAVENPORT, Ian | Secretary | 2025-08-20 | — | — |
| AGYEI, Yvonne | Director | 2019-07-01 | Feb 1969 | American |
| DRAGER, Timothy | Director | 2024-05-24 | Dec 1988 | Canadian,Swiss |
| GREEN, Philip David | Director | 2019-11-01 | Jul 1975 | British |
| GROSS, Adam | Director | 2026-02-25 | Apr 1972 | American |
| STUTTARD, Dafydd Nicholas, Dr | Director | 2008-10-09 | Oct 1972 | British |
| STUTTARD, Rebecca Jane | Director | 2015-01-23 | Apr 1977 | British |
Show 6 resigned officers
| Name | Role | Appointed | Resigned |
|---|---|---|---|
| BLOMFIELD, Paul | Secretary | 2012-05-08 | 2025-08-20 |
| STUTTARD, Dafydd, Dr | Secretary | 2008-10-09 | 2012-05-08 |
| BIAGINI, Larry | Director | 2024-05-24 | 2025-08-20 |
| BLOMFIELD, Paul Richard | Director | 2019-01-01 | 2025-08-20 |
| KENT, Gillian Dawn Celia | Director | 2019-04-01 | 2022-03-31 |
| WHITEHOUSE, Oliver | Director | 2019-01-01 | 2023-10-20 |
Ownership
Persons with significant control
| Name | Kind | Nature of control | Notified | Status |
|---|---|---|---|---|
| Mr Mark Francis Dzialga | Individual | Significant influence (as firm) | 2024-07-18 | Active |
| Ms Rebecca Jane Stuttard | Individual | Voting 75–100%, Appoints directors | 2016-10-09 | Ceased 2022-10-14 |
| Dr Dafydd Nicholas Stuttard | Individual | Shares 50–75%, Voting 50–75%, Appoints directors | 2016-10-09 | Active |
Filing timeline
Last 20 of 94 total filings
Material constitutional events — rename, articles re-file, resolution
- 2025-11-28 MA Memorandum articles
- 2025-11-28 RESOLUTIONS Resolution
| Date | Type | Category | Description | |
|---|---|---|---|---|
| 2026-05-28 | AA | accounts | Accounts with accounts type group | |
| 2026-03-24 | AP01 | officers | Appoint person director company with name date | |
| 2026-03-20 | SH01 | capital | Capital allotment shares | |
| 2025-12-18 | SH01 | capital | Capital allotment shares | |
| 2025-12-02 | SH01 | capital | Capital allotment shares | |
| 2025-11-28 | MA | incorporation | Memorandum articles | |
| 2025-11-28 | RESOLUTIONS | resolution | Resolution | |
| 2025-10-22 | CS01 | confirmation-statement | Confirmation statement with updates | |
| 2025-10-22 | PSC04 | persons-with-significant-control | Change to a person with significant control | |
| 2025-10-03 | AA | accounts | Accounts with accounts type group | |
| 2025-09-30 | RP01SH01 | miscellaneous | Legacy | |
| 2025-09-29 | SH01 | capital | Capital allotment shares | |
| 2025-09-09 | TM01 | officers | Termination director company with name termination date | |
| 2025-09-09 | AP03 | officers | Appoint person secretary company with name date | |
| 2025-09-09 | TM01 | officers | Termination director company with name termination date | |
| 2025-09-09 | TM02 | officers | Termination secretary company with name termination date | |
| 2025-05-22 | SH01 | capital | Capital allotment shares | |
| 2025-05-22 | SH01 | capital | Capital allotment shares | |
| 2025-04-01 | SH01 | capital | Capital allotment shares | |
| 2025-02-27 | SH01 | capital | Capital allotment shares |
Public-record activity
Raw counts from Companies House — last 12–24 months
- Filings
- 16
- Capital events
- 8
- Officers appointed
- 2
- 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.