−£2.30m
vs Dec 2024Active13157735Private limited companyAbingdon
THIRTYFIVEBIO LIMITED
From public filings as at 31 Aug 2026; may contain errors or be out of date.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 Thirtyfivebio Limited 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
THIRTYFIVEBIO LIMITED is an active private limited company (company number 13157735) incorporated on 26 January 2021, registered in Abingdon. 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 −£2.30m and cash of £394k, with 5 employees on average. Net assets fell 19604% on the prior period (−£12k). Across the last 3 periods on record the net-asset trend is falling.
Peer position · net assets
By net assets it sits in the bottom 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
- 26 January 20215 yrs ago
- Next accounts due
- 30 September 2027in 342 days
- Confirmation statement due
- 9 February 2027in 109 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
- MicroCompanies Act thresholds
05
Financials
£394k
+12%vs Dec 2024Not reported
5
−37%vs Dec 2024| Period end | Net assets | Cash | Debtors | Creditors <1y | Turnover | Profit | Employees |
|---|---|---|---|---|---|---|---|
| 31 December 2025 | −£2.30m | £394k | — | £3.45m | — | — | 5 |
| 31 December 2024 | −£12k | £353k | — | £997k | — | — | 8 |
| 31 December 2023 | £2.40m | £1.96m | — | £409k | — | — | 6 |
Current ratio0.33Current assets ÷ creditors within one year
Cash per employee£79kCash ÷ 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 below zeroNet assets £-2,299,214 at 31 December 2025
- Net assets down 25% or more on the prior period-19603.6% vs prior period
- Current assets below creditors within one yearCurrent ratio 0.33
- Cash at bank of £50,000 or moreCash £394,250
- Three or more accounting periods on record3 periods on record
- Incorporated five or more years agoIncorporated 26 January 2021
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 342 days
- Confirmation statement duein 109 days
- Accounts period endNet liabilities £2.30m · small accounts
- Accounts period endNet liabilities £12k · small accounts
- Accounts period endNet assets £2.40m · small accounts
- Incorporated
08
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All companies incorporated on 26 January 2021 · in Jan 2021.
09
Reminders for THIRTYFIVEBIO LIMITED
Get an email before each filing deadline — accounts and confirmation statement — so nothing is late.