£5.96m
−22%vs Dec 2024Active12420619Private limited companySaffron Walden
BROKEN STRING BIOSCIENCES 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From public filings as at 31 Aug 2026; may contain errors or be out of date.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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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
BROKEN STRING BIOSCIENCES LIMITED is an active private limited company (company number 12420619) incorporated on 23 January 2020, registered in Saffron Walden. 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 £5.96m and cash of £4.38m, with 24 employees on average. Net assets fell 22% on the prior period (£7.63m). 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 196 comparable companies in Cambridge (median £15k, upper quartile £347k).
02
Ownership and control
No active person with significant control is registered.
- Professor Simon Huw Reed
- owns 25–50% of shares
- holds 25–50% 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
- 23 January 20206 yrs ago
- Next accounts due
- 30 September 2027in 342 days
- Confirmation statement due
- 6 February 2027in 106 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
- Small
- Size band
- SmallCompanies Act thresholds
05
Financials
£4.38m
−31%vs Dec 2024Not reported
24
−17%vs Dec 2024| Period end | Net assets | Cash | Debtors | Creditors <1y | Turnover | Profit | Employees |
|---|---|---|---|---|---|---|---|
| 31 December 2025 | £5.96m | £4.38m | — | £407k | — | — | 24 |
| 31 December 2024 | £7.63m | £6.35m | — | £566k | — | — | 29 |
| 31 December 2023 | £6.71m | £5.94m | — | £416k | — | — | 14 |
Current ratio14.97Current assets ÷ creditors within one year
Cash per employee£183kCash ÷ 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 £5,964,331 at 31 December 2025
- Current assets at least 1.5× creditors within one yearCurrent ratio 14.97
- Cash at bank of £50,000 or moreCash £4,381,670
- Three or more accounting periods on record3 periods on record
- Incorporated five or more years agoIncorporated 23 January 2020
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 106 days
- Accounts period endNet assets £5.96m · small accounts
- Accounts period endNet assets £7.63m · small accounts
- Accounts period endNet assets £6.71m · small accounts
- Incorporated
08
Similar companies in Cambridge
- ENHANCED GENOMICS LIMITEDCambridge · inc. Jan 2020
- BIOCERA MEDICAL LIMITEDHaverhill · inc. Jan 2020
- IMHOTEX LIMITEDCambridge · inc. Feb 2020
- MESTAG THERAPEUTICS LTDSaffron Walden · inc. Feb 2020
- AVATRIAL LTDCambridge · inc. Dec 2019
- LUCIDA MEDICAL LTDCambridge · inc. Nov 2019
All companies incorporated on 23 January 2020 · in Jan 2020.
09
Reminders for BROKEN STRING BIOSCIENCES LIMITED
Get an email before each filing deadline — accounts and confirmation statement — so nothing is late.