# CONCERT BIO LTD (13568883)

> CONCERT BIO LTD is an active private limited company (company number 13568883) incorporated on 16 August 2021, registered in London. Its registered activity is research and experimental development on biotechnology (SIC 72110). Latest small accounts cover the period ending 30 June 2025, showing net assets of £1.36m, with 11 employees on average. Net assets rose 210% on the prior period (−£1.23m).

- Status: Active
- Incorporated: 2021-08-16
- Registered office: London, W12 0BZ
- SIC 72110: Research and experimental development on biotechnology
- Next accounts due: 2027-03-30
- Confirmation statement due: 2027-08-30
- Accounts type: TOTAL EXEMPTION FULL

By net assets it sits in the top quarter of 603 comparable companies in London (median £440, upper quartile £92k).

## Accounts (as filed)

| Period end | Net assets | Cash | Debtors | Creditors <1y | Turnover | Profit | Employees |
|---|---|---|---|---|---|---|---|
| 2025-06-30 | £1.36m | — | — | £93k | — | — | 11 |
| 2024-06-30 | −£1.23m | — | — | £42k | — | — | 10 |

current ratio 4.71; size band small.

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

- Net assets above zero: Net assets £1,357,665 at 30 June 2025
- Net assets up 10% or more on the prior period: +209.9% vs prior period
- Current assets at least 1.5× creditors within one year: Current ratio 4.71
- Incorporated five or more years ago: Incorporated 16 August 2021

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

## Persons with significant control

- Mr Paul Johan Rutten — owns 75–100% of shares; holds 75–100% of voting rights; can appoint or remove directors, since 2021-08-16

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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/13568883
HTML: https://firmoscan.com/company/13568883-concert-bio-ltd