£190k
−41%vs Dec 2023Active00704871Private limited companyOxon
DIAGNOSTIC REAGENTS LIMITED
Significant control: Diagnostic Reagents Holdings Limited (75–100%)
From public filings as at 31 Aug 2026; may contain errors or be out of date. Verify at Companies House · Terms
Watch this company
Get an email when Companies House records a change for Diagnostic Reagents Limited: status, filings, accounts, officers or owners. Free.
Not live yet: alerts start by 15 December 2026. We store your email and this company number only, for these alerts. If alerts don’t launch, we tell you and delete your address. Privacy
Coming soon · product and service lists
What does Diagnostic Reagents Limited sell?
Registered activity: Manufacture of basic pharmaceutical products (SIC 21100). We’re building product and service lists for UK companies. Get this one when it’s ready.
One email, only about this. If we don’t launch within 60 days we’ll tell you. Privacy
01
Summary
DIAGNOSTIC REAGENTS LIMITED is an active private limited company (company number 00704871) incorporated on 4 October 1961, registered in Oxon. Its registered activity is manufacture of basic pharmaceutical products (SIC 21100). Latest small accounts cover the period ending 31 December 2024, showing net assets of £190k and cash of £196k, with 5 employees on average. Net assets fell 41% on the prior period (£324k).
Peer position · net assets
By net assets it sits in the top quarter of 661 comparable companies in the UK (median £265, upper quartile £89k).
02
Ownership and control
- Diagnostic Reagents Holdings Limited
- owns 75–100% of shares
- holds 75–100% of voting rights
- can appoint or remove directors
- Dr Anthony Kenneth Denson
- owns 75–100% of shares
- holds 75–100% of voting rights
- can appoint or remove directors
- Dr Anthony Kenneth Denson
- owns 75–100% of shares
- holds 75–100% of voting rights
Persons with significant control hold 25% or more of shares or voting rights. Smaller shareholdings are only listed in confirmation-statement documents. Directors and secretaries: see the officers list at Companies House.
03
Key dates
- Incorporated
- 4 October 196165 yrs ago
- Next accounts due
- 30 September 202628 days overdue
- Confirmation statement due
- 18 October 2027in 355 days
Due dates are expected from Companies House filing rules; confirm on the official register before relying on them.
04
Activity
- SIC 21100
- Manufacture of basic pharmaceutical products
- Accounts type
- Total Exemption Full
- Size band
- MicroCompanies Act thresholds
05
Financials
£196k
+39%vs Dec 2023Not reported
5
No changevs Dec 2023| Period end | Net assets | Cash | Debtors | Creditors <1y | Turnover | Profit | Employees |
|---|---|---|---|---|---|---|---|
| 31 December 2024 | £190k | £196k | — | £138k | — | — | 5 |
| 31 December 2023 | £324k | £140k | — | £30k | — | — | 5 |
Current ratio2.27Current assets ÷ creditors within one year
Cash per employee£39kCash ÷ average employees
Figures as filed in iXBRL accounts at Companies House. "—" means the line was not reported in that filing.
06
Filing and accounts signals
- Net assets above zeroNet assets £190,473 at 31 December 2024
- Net assets down 25% or more on the prior period-41.3% vs prior period
- Current assets at least 1.5× creditors within one yearCurrent ratio 2.27
- Cash at bank of £50,000 or moreCash £195,836
- Incorporated five or more years agoIncorporated 4 October 1961
- Accounts past their due dateDue 30 September 2026
Neutral facts read from the register and filed accounts, each with its evidence. They are not a rating, a prediction or advice, and may be incomplete or out of date. How each signal is derived.
07
Timeline
- Confirmation statement duein 355 days
- Next accounts due28 days overdue
- Accounts period endNet assets £190k · small accounts
- Accounts period endNet assets £324k · small accounts
- Incorporated
08
Similar companies in Oxford
- MATTHEWS & WILSON LIMITEDCharlbury · inc. Feb 1946
- BIO-RAD ABD SEROTEC LTDKidlington · inc. Dec 1981
- OXFORD BIOMEDICA (UK) LIMITEDOxford · inc. Mar 1995
- BIO-LIFE INTERNATIONAL LIMITEDBanbury · inc. Nov 2006
- OPTRONICA LIMITEDBanbury · inc. Aug 2014
- PLUSULTRA PHARMA UK LTDOxford · inc. Oct 2020
All companies incorporated on 4 October 1961 · in Oct 1961.
09
Reminders for DIAGNOSTIC REAGENTS LIMITED
Get an email before each filing deadline — accounts and confirmation statement — so nothing is late.