£19k
+19190%vs Apr 2024Active13349556Private limited companyCambridge
A BIO LIMITED
Significant control: David John Grainger (25–50%), Rebecca Katie Grainger (25–50%) and 1 more
From public filings as at 31 Aug 2026; may contain errors or be out of date.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 A Bio 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
A BIO LIMITED is an active private limited company (company number 13349556) incorporated on 21 April 2021, registered in Cambridge. Its registered activity is research and experimental development on biotechnology (SIC 72110). Latest small accounts cover the period ending 30 April 2025, showing net assets of £19k and cash of £4,665, with 3 employees on average. Net assets rose 19190% on the prior period (£100).
Peer position · net assets
By net assets it sits in the upper half of 196 comparable companies in Cambridge (median £15k, upper quartile £347k).
02
Ownership and control
- Dr David John Grainger
- owns 25–50% of shares
- holds 25–50% of voting rights
- can appoint or remove directors
- Ms Rebecca Katie Grainger
- owns 25–50% of shares
- holds 25–50% of voting rights
- can appoint or remove directors
- Elements Squared Limited
- 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
- 21 April 20215 yrs ago
- Next accounts due
- 30 January 2027in 98 days
- Confirmation statement due
- 5 May 2027in 193 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
£4,665
+4565%vs Apr 2024Not reported
3
vs Apr 2024| Period end | Net assets | Cash | Debtors | Creditors <1y | Turnover | Profit | Employees |
|---|---|---|---|---|---|---|---|
| 30 April 2025 | £19k | £4,665 | £20k | — | — | — | 3 |
| 30 April 2024 | £100 | £100 | £0 | — | — | — | 0 |
Cash per employee£1,555Cash ÷ 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 £19,290 at 30 April 2025
- Net assets up 10% or more on the prior period+19190.0% vs prior period
- Incorporated five or more years agoIncorporated 21 April 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
- Confirmation statement duein 193 days
- Next accounts duein 98 days
- Accounts period endNet assets £19k · small accounts
- Accounts period endNet assets £100 · small accounts
- Incorporated
08
Similar companies in Cambridge
- EPITOPEA LIMITEDCambridge · inc. Apr 2021
- CAMBRIDGE BEVERAGE TECHNOLOGIES LIMITEDCambridge · inc. Apr 2021
- SITALA BIO LTDCambridge · inc. May 2021
- CENENTRY BIOSCIENCES LIMITEDCambridge · inc. Mar 2021
- PARTITIONBIO LTDHelions Bumpstead · inc. May 2021
- POLYMER BIONICS LIMITEDCambridge · inc. Jun 2021
All companies incorporated on 21 April 2021 · in Apr 2021.
09
Reminders for A BIO LIMITED
Get an email before each filing deadline — accounts and confirmation statement — so nothing is late.