NIOX GROUP PLC

Active
Company number 05822706Public limited companyIncorporated 2006

Key figures

£131,400,000-10.5%
Net assets 2025
-10.5%
Average annual change 2024–2025
050 m100 m150 m20242025

† NIOX GROUP PLC filed these accounts on paper, so Companies House publishes them only as a scanned image. The figures for the years marked † were read automatically from the scan and kept only where the statements add up (for example net assets equal total equity), but a reading error is still possible — check the original accounts at Companies House.

NIOX GROUP PLC does not disclose its turnover in its latest accounts; the profit for the year is as stated in the accounts.

Ratios

2025

Sector comparison

SIC 70100

Where the company stands among the 25,710 active companies whose first SIC code is 70100 (Activities of head offices).

Net assets£131,400,000
Higher than 94% · median £388,830
Total assets£209,500,000
Higher than 92% · median £1,308,696
Cash£8,600,000
Higher than 92% · median £49,040
Employees95
Higher than 94% · median 0
Company age20.5 years
Older than 62% · median 16.6 years
Largest in this sector by net assets
  1. NSG HOLDING (EUROPE) LIMITED£335.6bn
  2. BRITISH AMERICAN TOBACCO (2012) LIMITED£68.8bn
  3. ASTRAZENECA TREASURY LIMITED£48.3bn
  4. BRITISH AMERICAN TOBACCO P.L.C.£48.1bn
  5. ASTRAZENECA UK LIMITED£42.3bn
  6. NATIONAL GRID PLC£39.3bn
  7. RIO TINTO INTERNATIONAL HOLDINGS LIMITED£39.2bn
  8. BRITISH AMERICAN TOBACCO (1998) LIMITED£34.1bn
  9. GLAXOSMITHKLINE HOLDINGS LIMITED£25.2bn
  10. BRITISH-AMERICAN TOBACCO (HOLDINGS) LIMITED£24.7bn

Positions are approximate. Figures come from each company's latest accounts; money and employee figures are compared only with companies that filed accounts in pounds for a period ending in the last two and a half years and are not dormant, so those groups are smaller than 25,710. The line on each bar marks the median.

Summary: NIOX GROUP PLC

What kind of company is it?

NIOX GROUP PLC is a public limited company registered with Companies House under company number 05822706. It was incorporated on 19 May 2006. Its status is active. The registered office is in Oxford (OX4). Its nature of business (SIC 2007) is activities of head offices (70100).

How is the company doing financially?

The latest accounts in the database are for 2025 (period ending 31 Dec 2025); the company files group accounts. Profit for the year was £7,000,000. Net assets were £131,400,000, down 10.5% on the previous year. Cash at bank and in hand was £8,600,000. Total assets were £209,500,000 and total liabilities £78,100,000. The company had an average of 95 employees. Figures are available for 2 financial years (2024–2025).

How does it compare with similar companies?

Compared with 25,710 active companies whose first SIC code is 70100: By net assets it ranks higher than 94% of them (median £388,830). By total assets it ranks higher than 92% of them (median £1,308,696). By cash it ranks higher than 92% of them (median £49,040). By number of employees it ranks higher than 94% of them (median 0). It is older than 62% of them (median age 16.6 years).

What do public registers and reports show?

It has modern slavery statements on the government registry for 4 years.

When are its next filings due?

The next accounts are due by 30 Jun 2027. The next confirmation statement is due by 2 Jun 2027.

Filed accounts2024–2025
2024 †2025 †
Profit for the year3,700,0007,000,000
Cash at bank and in hand1,300,0008,600,000
Total assets201,400,000209,500,000
Total liabilities54,600,00078,100,000
Net assets / total equity146,800,000131,400,000
Average number of employees9195

A dash (—) means no accounts were filed for that year or the item is not in the accounts; 0 is a zero stated in the accounts. Small companies usually file only a balance sheet, so the profit and loss account is often missing.

Statutory reporting

Modern slavery statements4
2026
Statement · summary on GOV.UK · group statement
2025
Statement · summary on GOV.UK · group statement
2024
Statement · summary on GOV.UK · group statement
Earlier years (1)
2021
Statement · summary on GOV.UK · group statement

Figures the company reported itself to the government's Check payment practices service, Gender pay gap service and Modern slavery statement registry (Open Government Licence v3.0). Only large companies and employers with 250 or more staff have to report, so most companies have nothing here.

History

7 events
  1. Financial year 2025 endedAccounts: net assets £131.4m, 95 employees
  2. Financial year 2024 endedAccounts: net assets £146.8m, 91 employees
  3. Name changed to NIOX GROUP PLCPreviously CIRCASSIA GROUP PLC
  4. Name changed to CIRCASSIA GROUP PLCPreviously CIRCASSIA PHARMACEUTICALS PLC
  5. Name changed to CIRCASSIA HOLDINGS LIMITEDPreviously CIRCASSIA PHARMACEUTICALS LIMITED
  6. Name changed to CIRCASSIA PHARMACEUTICALS PLCPreviously CIRCASSIA HOLDINGS LIMITED
  7. Company incorporatedPublic limited company

Dates as recorded at Companies House: incorporation, name changes, officer appointments and resignations, current persons with significant control, and the end of each financial year with figures in the database. Former persons with significant control are not listed.