THERMAL HAZARD TECHNOLOGY LIMITED
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Next accounts due
2026-09-30 (in 4mo)
Last filed for 2024-12-31
Confirmation statement due
2026-12-02 (in 7mo)
Last made up 2025-11-18
Watchouts
Cash
£1M
+30.8% vs 2023
Net assets
£5M
+65.2% vs 2023
Employees
45
+4.7% vs 2023
Profit before tax
£3M
+14.3% vs 2023
Watchouts
Facts from the Companies House register and the latest accounts — not a rating
-
4 officer resignations in last 12 months
Multiple officers have left the board recently — see the People section for who.
Name history
Renamed 1 time since incorporation
- THERMAL HAZARD TECHNOLOGY LIMITED 2020-10-30 → present
- HEATH SCIENTIFIC COMPANY LTD 1994-11-18 → 2020-10-30
Net assets
2-year trend · vs Technology median
Accounts
2-year trend · latest reflected 2024-12-31
| Metric | Trend | 2023-12-31 | 2024-12-31 |
|---|---|---|---|
| Turnover | £11,029,535 | £10,283,026 | |
| Operating profit | £2,640,378 | £2,998,410 | |
| Profit before tax | £2,519,007 | £2,879,150 | |
| Net profit | £1,850,095 | £2,220,975 | |
| Cash | £1,087,698 | £1,422,920 | |
| Total assets less current liabilities | £4,552,113 | £6,171,143 | |
| Net assets | £2,789,000 | £4,608,792 | |
| Equity | £2,789,000 | £4,608,792 | |
| Average employees | 43 | 45 | |
| Wages | £1,976,146 | £2,218,432 |
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
Ratios
Computed from the line items above — sparklines read oldest → newest
| Ratio | Trend | 2023-12-31 | 2024-12-31 |
|---|---|---|---|
| Operating margin | 23.9% | 29.2% | |
| Net margin | 16.8% | 21.6% | |
| Return on capital employed | 58.0% | 48.6% | |
| Current ratio | 1.37x | 1.96x | |
| Interest cover | 21.75x | 24.52x |
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 101
- Reporting scope
- Standalone (parent only)
- Auditor
- BDO LLP
- Audit opinion
- Unqualified (clean)
- Going concern
- Affirmed
“The directors therefore have a reasonable expectation that the company has adequate resources to continue in operational existence for the foreseeable future. In making this assessment the directors have considered the period until the end of April 2026 and therefore they continue to adopt the going concern basis in preparing the financial statements.”
Group structure
- THERMAL HAZARD TECHNOLOGY LIMITED · parent
- Heath Scientific Company Ltd 100%
- THT Inc. 100%
- KAN-THT 50%
Significant events
- “The Company paid dividends of £400,000 (2023: £1,575,000).”
- “The company continued its investment in new products in 2024, and intangible fixed assets increased from £0.7m at the end of 2023 to £0.9m at the end of 2024.”
Auditor, going-concern and subsidiary information is drawn from the narrative of the latest annual accounts. About these numbers
People
9 active · 16 resigned
| Name | Role | Appointed | Born | Nationality |
|---|---|---|---|---|
| REECE, Glynn Carl | Secretary | 2020-05-28 | — | — |
| BURNISTON, Thomas Edward | Director | 2025-01-06 | Jul 1982 | British |
| KEMP, Jonathan Malcolm | Director | 2025-12-01 | Jun 1979 | British |
| LAVELLE, Mark Stephen | Director | 2020-05-28 | Sep 1958 | British |
| MORES, Stelios | Director | 1998-03-13 | Feb 1964 | British |
| ORMSBY, Bradley Leonard | Director | 2020-05-28 | Feb 1976 | British |
| PRESTIDGE, Tim, Dr | Director | 2024-01-22 | May 1971 | British |
| READ, Damon Frederick | Director | 2024-10-07 | Sep 1972 | British |
| WILCOCK, Ian Christopher, Dr | Director | 2025-01-21 | Feb 1967 | British |
Show 16 resigned officers
| Name | Role | Appointed | Resigned |
|---|---|---|---|
| OTTAWAY, Martyn Robert | Secretary | 1994-11-18 | 2020-05-28 |
| LONDON LAW SECRETARIAL LIMITED | Corporate Nominee Secretary | 1994-11-18 | 1994-11-18 |
| ANDREWS, Stuart | Director | 2021-09-01 | 2024-11-28 |
| CICUREL, David Elie | Director | 2020-05-28 | 2026-02-08 |
| GREGORY, Sean, Dr | Director | 2020-05-28 | 2022-02-25 |
| IMPEY, Gail Melinda | Director | 2009-11-03 | 2010-08-17 |
| LHERMITTE, Erwan | Director | 2023-07-17 | 2025-12-22 |
| O'KANE, Daniela | Director | 2017-08-01 | 2020-05-28 |
| O'KANE, Phillip John | Director | 1998-03-13 | 2025-11-30 |
| O'KANE, Phillip John | Director | 1994-11-18 | 1994-12-31 |
| OTTAWAY, Jennifer Ann | Director | 1994-12-31 | 2020-05-28 |
| OTTAWAY, Martyn Robert | Director | 1994-11-18 | 2021-08-31 |
| OTTAWAY, Stephen Martyn | Director | 2019-11-20 | 2024-01-22 |
| SMOLEY, David Marcus | Director | 2022-07-18 | 2024-11-27 |
| SPINK, Geoffrey | Director | 2020-06-15 | 2026-03-04 |
| LONDON LAW SERVICES LIMITED | Corporate Nominee Director | 1994-11-18 | 1994-11-18 |
Ownership
Persons with significant control
| Name | Kind | Nature of control | Notified | Status |
|---|---|---|---|---|
| Judges Scientific Plc | Corporate entity | Shares 75–100%, Voting 75–100%, Appoints directors | 2020-05-28 | Active |
| Mr Stelios Mores | Individual | Shares 25–50% | 2017-11-01 | Ceased 2020-05-28 |
| Mrs Jennifer Ann Ottaway | Individual | Shares 25–50%, Voting 25–50% | 2016-04-06 | Ceased 2020-05-28 |
| Mrs Daniela O'Kane | Individual | Shares 25–50%, Voting 25–50% | 2016-04-06 | Ceased 2020-05-28 |
| Mrs Julia Mary Mores | Individual | Shares 25–50%, Voting 25–50% | 2016-04-06 | Ceased 2017-11-01 |
Filing timeline
Last 20 of 136 total filings
| Date | Type | Category | Description | |
|---|---|---|---|---|
| 2026-03-23 | TM01 | officers | Termination director company with name termination date | |
| 2026-02-17 | TM01 | officers | Termination director company with name termination date | |
| 2025-12-22 | TM01 | officers | Termination director company with name termination date | |
| 2025-12-13 | CS01 | confirmation-statement | Confirmation statement with no updates | |
| 2025-12-11 | AP01 | officers | Appoint person director company with name date | |
| 2025-12-01 | TM01 | officers | Termination director company with name termination date | |
| 2025-10-22 | AA | accounts | Accounts with accounts type full | |
| 2025-01-21 | AP01 | officers | Appoint person director company with name date | |
| 2025-01-14 | AP01 | officers | Appoint person director company with name date | |
| 2024-12-02 | TM01 | officers | Termination director company with name termination date | |
| 2024-12-02 | CS01 | confirmation-statement | Confirmation statement with no updates | |
| 2024-12-02 | TM01 | officers | Termination director company with name termination date | |
| 2024-10-15 | AP01 | officers | Appoint person director company with name date | |
| 2024-09-19 | AA | accounts | Accounts with accounts type small | |
| 2024-07-03 | MR01 | mortgage | Mortgage create with deed with charge number charge creation date | |
| 2024-01-22 | AP01 | officers | Appoint person director company with name date | |
| 2024-01-22 | TM01 | officers | Termination director company with name termination date | |
| 2023-12-04 | CS01 | confirmation-statement | Confirmation statement with no updates | |
| 2023-09-21 | AA | accounts | Accounts with accounts type small | |
| 2023-07-21 | AP01 | officers | Appoint person director company with name date |
Public-record activity
Raw counts from Companies House — last 12–24 months
- Filings
- 7
- Capital events
- 0
- Officers appointed
- 1
- Officers resigned
- 4
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.
Year-on-year
FY2023 → FY2024 · period ending 2024-12-31 vs 2023-12-31
-
Turnover
-6.8%
£11,029,535 £10,283,026
-
Cash
+30.8%
£1,087,698 £1,422,920
-
Net assets
+65.2%
£2,789,000 £4,608,792
-
Employees
+4.7%
43 45
-
Operating profit
+13.6%
£2,640,378 £2,998,410
-
Profit before tax
+14.3%
£2,519,007 £2,879,150
-
Wages
+12.3%
£1,976,146 £2,218,432
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