ISDI LIMITED
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Cash
£704K
+37.8% vs 2024
Net assets
£8.4M
+13.1% vs 2024
Employees
32
-3% vs 2024
Profit before tax
£972K
+56.4% vs 2024
Profit before tax
2-year trend · vs Technology median
Accounts
2-year trend · Δ = latest vs prior filed period · latest reflected 2025-05-31
| Metric | Trend | 2024-05-31 | 2025-05-31 | Δ vs prior |
|---|---|---|---|---|
| Turnover | £24,794,057 | £18,241,074 | -26.4% | |
| Operating profit | £723,556 | £1,134,110 | +56.7% | |
| Profit before tax | £621,671 | £972,080 | +56.4% | |
| Net profit | £722,966 | £968,511 | +34% | |
| Cash | £511,096 | £704,059 | +37.8% | |
| Total assets less current liabilities | £7,403,554 | £8,372,065 | +13.1% | |
| Net assets | — | — | — | |
| Equity | £7,403,554 | £8,372,065 | +13.1% | |
| Average employees | 33 | 32 | -3% | |
| Wages | £1,605,168 | £1,425,178 | -11.2% | |
| Directors' remuneration | £298,583 | £152,343 | -49% |
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 | 2024-05-31 | 2025-05-31 |
|---|---|---|---|
| Operating margin | 2.9% | 6.2% | |
| Net margin | 2.9% | 5.3% | |
| Return on capital employed | 9.8% | 13.5% | |
| Current ratio | 1.66x | 2.15x | |
| Interest cover | 7.10x | 7.00x |
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
- ISDI LIMITED 2010-11-25 → present
- GORDONS 171 LIMITED 2010-07-14 → 2010-11-25
Audit & accounting basis
- Accounting basis
- FRS 102
- Reporting scope
- Consolidated group
- Auditor
- Thorne Lancaster Parker
- 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.”
Group structure
- ISDI LIMITED · parent
- ISDI Deutschland GmbH 100%
- Spectrum Logic Limited 100%
- ISDI GmbH 100%
- ISDI CY Ltd 100%
Significant events
- “ISDI Limited's profitability has improved thanks to growth in sales of its X-ray detectors in industrial markets and the increase in the number customers served. Turnover was reduced compared to the prior year due to the impact of inventory management by customers following the pandemic and subsequent global supply chain crisis.”
- “The directors intend to improve the position of the group within its existing markets and enter new adjacent markets through innovative new products leveraging our technology portfolio.”
Auditor, going-concern and subsidiary information is drawn from the narrative of the latest annual accounts. About these numbers
People
5 active · 5 resigned
| Name | Role | Appointed | Born | Nationality |
|---|---|---|---|---|
| ANAXAGORAS, Thalis, Dr | Director | 2011-07-07 | Jan 1980 | Cypriot |
| BULLARD, Edward Frederick | Director | 2013-02-01 | Sep 1968 | English |
| GAO, Zihuan | Director | 2024-04-16 | Mar 1995 | Chinese |
| HERMANS, Louis, Dr | Director | 2017-05-12 | Mar 1956 | Belgian |
| INNES, Alan Graeme | Director | 2019-07-29 | Aug 1966 | British |
Show 5 resigned officers
| Name | Role | Appointed | Resigned |
|---|---|---|---|
| ALLINSON, Nigel Martin, Professor | Director | 2014-02-14 | 2018-11-29 |
| ALLINSON, Nigel Martin, Professor | Director | 2011-05-11 | 2011-11-14 |
| BULLARD, Edward Frederick | Director | 2010-11-25 | 2011-06-06 |
| FANT, Andrea | Director | 2011-07-07 | 2012-02-07 |
| ROBINS, Derek Ian | Director | 2010-07-14 | 2010-11-25 |
Ownership
Persons with significant control
| Name | Kind | Nature of control | Notified | Status |
|---|---|---|---|---|
| Mr Liu Jianqiang | Individual | Shares 25–50% | 2024-04-16 | Ceased 2024-05-21 |
| Mr Edward Frederick Bullard | Individual | Shares 25–50%, Voting 25–50% | 2016-04-06 | Active |
| Mr Thalis Anaxagoras | Individual | Shares 25–50%, Voting 25–50% | 2016-04-06 | Active |
Filing timeline
Last 20 of 87 total filings
Material constitutional events — rename, articles re-file, resolution
- 2024-04-23 RESOLUTIONS Resolution
- 2024-04-23 MA Memorandum articles
| Date | Type | Category | Description | |
|---|---|---|---|---|
| 2026-03-25 | PSC04 | persons-with-significant-control | Change to a person with significant control | |
| 2026-03-24 | PSC04 | persons-with-significant-control | Change to a person with significant control | |
| 2026-03-24 | PSC04 | persons-with-significant-control | Change to a person with significant control | |
| 2026-02-17 | AA01 | accounts | Change account reference date company previous shortened | |
| 2025-11-20 | AA | accounts | Accounts with accounts type group | |
| 2025-08-11 | CH01 | officers | Change person director company with change date | |
| 2025-08-11 | CH01 | officers | Change person director company with change date | |
| 2025-08-07 | CS01 | confirmation-statement | Confirmation statement with no updates | |
| 2024-10-14 | AA | accounts | Accounts with accounts type group | |
| 2024-08-26 | CS01 | confirmation-statement | Confirmation statement with updates | |
| 2024-05-23 | PSC07 | persons-with-significant-control | Cessation of a person with significant control | |
| 2024-05-09 | PSC01 | persons-with-significant-control | Notification of a person with significant control | |
| 2024-04-23 | RESOLUTIONS | resolution | Resolution | |
| 2024-04-23 | MA | incorporation | Memorandum articles | |
| 2024-04-18 | AP01 | officers | Appoint person director company with name date | |
| 2023-08-23 | AA | accounts | Accounts with accounts type group | |
| 2023-08-03 | CS01 | confirmation-statement | Confirmation statement with no updates | |
| 2023-02-07 | AA | accounts | Accounts with accounts type group | |
| 2023-01-24 | SH01 | capital | Capital allotment shares | |
| 2022-12-20 | CS01 | confirmation-statement | Confirmation statement with no updates |
Public-record activity
Raw counts from Companies House — last 12–24 months
- Filings
- 8
- 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.