£6.57m
+63%vs Dec 2024Active09846477Private limited companyOxford
OPTELLUM LTD
From public filings as at 31 Aug 2026; may contain errors or be out of date. Verify at Companies House · Terms
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What does Optellum Ltd sell?
Registered activity: Research and experimental development on biotechnology (SIC 72110). We’re building product and service lists for UK companies. Get this one when it’s ready.
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01
Summary
OPTELLUM LTD is an active private limited company (company number 09846477) incorporated on 28 October 2015, registered in Oxford. Its registered activity is research and experimental development on biotechnology (SIC 72110). Latest small accounts cover the period ending 31 December 2025, showing net assets of £6.57m and cash of £3.25m, with 34 employees on average. Net assets rose 63% on the prior period (£4.02m). Across the last 3 periods on record the net-asset trend is volatile.
Peer position · net assets
By net assets it sits in the top quarter of 152 comparable companies in Oxford (median £10k, upper quartile £474k).
02
Ownership and control
No active person with significant control is registered.
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
- 28 October 201510 yrs ago
- Next accounts due
- 30 September 2027in 341 days
- Confirmation statement due
- 11 November 2026in 18 days
Due dates are expected from Companies House filing rules; confirm on the official register before relying on them.
04
Activity
- SIC 72110
- Research and experimental development on biotechnology
- Accounts type
- Total Exemption Full
- Size band
- SmallCompanies Act thresholds
05
Financials
£3.25m
+51%vs Dec 2024Not reported
34
−6%vs Dec 2024| Period end | Net assets | Cash | Debtors | Creditors <1y | Turnover | Profit | Employees |
|---|---|---|---|---|---|---|---|
| 31 December 2025 | £6.57m | £3.25m | £4.75m | £1.46m | — | — | 34 |
| 31 December 2024 | £4.02m | £2.15m | £2.66m | £819k | — | — | 36 |
| 30 June 2024 | £5.15m | £3.53m | £2.22m | £642k | — | — | 35 |
Current ratio5.48Current assets ÷ creditors within one year
Cash per employee£96kCash ÷ 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 £6,572,438 at 31 December 2025
- Net assets up 10% or more on the prior period+63.3% vs prior period
- Current assets at least 1.5× creditors within one yearCurrent ratio 5.48
- Cash at bank of £50,000 or moreCash £3,248,182
- Three or more accounting periods on record3 periods on record
- Incorporated five or more years agoIncorporated 28 October 2015
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
- Next accounts duein 341 days
- Confirmation statement duein 18 days
- Accounts period endNet assets £6.57m · small accounts
- Accounts period endNet assets £4.02m · small accounts
- Accounts period endNet assets £5.15m · small accounts
- Incorporated
08
Similar companies in Oxford
- T-CYPHER BIO LIMITEDAbingdon · inc. Oct 2015
- ESTRYX PHARMA LIMITEDWitney · inc. Nov 2015
- OXFORD ENDOVASCULAR LIMITEDOxford · inc. Sept 2015
- THE GENOME FOUNDRY LIMITEDOxford · inc. Sept 2015
- TAILORED CLINICAL RESEARCH SOLUTIONS LIMITEDOxford · inc. Dec 2015
- GYLDEN PHARMA LIMITEDAbingdon · inc. Jan 2016
All companies incorporated on 28 October 2015 · in Oct 2015.
09
Reminders for OPTELLUM LTD
Get an email before each filing deadline — accounts and confirmation statement — so nothing is late.