# Certain Six Limited

## Details

- **Company number:** [10748501](https://find-and-update.company-information.service.gov.uk/company/10748501)
- **Status:** Active
- **Type:** Private Limited Company
- **Incorporated:** 2 May 2017
- **Registered office:** 9TH FLOOR, 107 CHEAPSIDE, LONDON, EC2V 6DN
- **Nature of business:** [62012](/sic/62012) Business and domestic software development


## Previous names

- Certain Six Software Limited (until 16 Jun 2017)




## Control

| Name | Nature of control | Notified | Ceased |
|---|---|---|---|
| Mr Simon Keith Smith | ownership-of-shares-75-to-100-percent, voting-rights-75-to-100-percent | 2 May 2017 | 24 Aug 2017 |
| Mr Ronnie Michael Harris | ownership-of-shares-25-to-50-percent, ownership-of-shares-25-to-50-percent-as-trust, voting-rights-25-to-50-percent, voting-rights-25-to-50-percent-as-trust | 25 Aug 2017 | 2 Jan 2020 |
| Mr Mark Knopfler | ownership-of-shares-25-to-50-percent, ownership-of-shares-25-to-50-percent-as-trust, voting-rights-25-to-50-percent, voting-rights-25-to-50-percent-as-trust | 25 Aug 2017 | 2 Jan 2020 |
| Mr Nicholas Alexander Smith | ownership-of-shares-25-to-50-percent, voting-rights-25-to-50-percent | 2 Jan 2020 | 15 Dec 2022 |
| Mr Alex Michael Metaxas | ownership-of-shares-25-to-50-percent, voting-rights-25-to-50-percent | 2 Jan 2020 | 15 Dec 2022 |
| Mr Mark Knopfler | ownership-of-shares-50-to-75-percent, ownership-of-shares-50-to-75-percent-as-trust, voting-rights-50-to-75-percent, voting-rights-25-to-50-percent-as-trust | 4 Feb 2020 |  |
| Mr Ronnie Michael Harris | ownership-of-shares-50-to-75-percent, ownership-of-shares-50-to-75-percent-as-trust, voting-rights-50-to-75-percent, voting-rights-25-to-50-percent-as-trust | 4 Feb 2020 |  |



## Accounts

| Year ended | Net assets | Cash | Employees |
|---|---|---|---|
| 31 Mar 2025 | £3,212,847 | £258,635 | 0 |
| 31 Mar 2024 | £3,800,945 | £898,438 | 9 |
| 31 Mar 2023 | -£354,537 | £238,676 | 9 |
| 31 Mar 2022 | £57,703 | £128,733 | 9 |
| 31 Mar 2021 | £504,075 | £596,677 | 9 |
| 31 Mar 2020 | £843,001 | £1,095,721 | 14 |






## Registered address

281 companies are registered at this address - likely a registration agent.