# THIRTYFIVEBIO LIMITED (13157735)

> 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.

- Status: Active
- Incorporated: 2021-01-26
- Registered office: Abingdon, OX14 4RY
- SIC 72110: Research and experimental development on biotechnology
- Next accounts due: 2027-09-30
- Confirmation statement due: 2027-02-09
- Accounts type: TOTAL EXEMPTION FULL

By net assets it sits in the bottom quarter of 152 comparable companies in Oxford (median £10k, upper quartile £474k).

## Accounts (as filed)

| Period end | Net assets | Cash | Debtors | Creditors <1y | Turnover | Profit | Employees |
|---|---|---|---|---|---|---|---|
| 2025-12-31 | −£2.30m | £394k | — | £3.45m | — | — | 5 |
| 2024-12-31 | −£12k | £353k | — | £997k | — | — | 8 |
| 2023-12-31 | £2.40m | £1.96m | — | £409k | — | — | 6 |

current ratio 0.33; net assets trend falling; size band micro.

## Filing and accounts signals (facts, not a rating)

- Net assets below zero: Net 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 year: Current ratio 0.33
- Cash at bank of £50,000 or more: Cash £394,250
- Three or more accounting periods on record: 3 periods on record
- Incorporated five or more years ago: Incorporated 26 January 2021

How each signal is derived: https://firmoscan.com/methodology

## Persons with significant control

- null (persons-with-significant-control-statement) — , since 2021-01-26

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Source: Companies House register snapshot 2026-08-31, Open Government Licence v3.0. Information may have changed since that date and is not advice or a credit reference; check the official record before relying on it. Official record: https://find-and-update.company-information.service.gov.uk/company/13157735
HTML: https://firmoscan.com/company/13157735-thirtyfivebio-limited