# Aion Silicon Holdings Limited

## Details

- **Company number:** [07275279](https://find-and-update.company-information.service.gov.uk/company/07275279)
- **Status:** Active
- **Type:** Private Limited Company
- **Incorporated:** 7 Jun 2010
- **Registered office:** 33 GREAT PORTLAND STREET, LONDON, W1W 8QG
- **Nature of business:** [70100](/sic/70100) Activities of head offices
- **Corporate group:** [ROX Technologies Ltd](/group/19555) (3 companies)


## Previous names

- Sondrel (Holdings) PLC (until 27 Aug 2024)
- Sondrel (Holdings) Ltd (until 13 Sep 2022)
- Sondrel (Holdings) Limited (until 11 Nov 2025)




## Control

| Name | Nature of control | Notified | Ceased |
|---|---|---|---|
| Rox Technologies Ltd | ownership-of-shares-50-to-75-percent, voting-rights-50-to-75-percent, right-to-appoint-and-remove-directors | 12 Nov 2024 |  |
| Rox Equity Partners Limited | ownership-of-shares-25-to-50-percent, voting-rights-25-to-50-percent | 14 Jun 2024 | 12 Nov 2024 |
| Graham Stephen Curren | ownership-of-shares-25-to-50-percent, voting-rights-25-to-50-percent | 6 Apr 2016 | 14 Jun 2024 |



## Accounts

| Year ended | Net assets | Cash | Employees |
|---|---|---|---|
| 31 Dec 2025 | £27,069,236 | £7,111 | 0 |



## Owned by

Aion Silicon Holdings Limited → [ROX Technologies Ltd](/company/15741689)



## Controls

- [Aion Silicon Limited](/company/04491953) (04491953)
- [Sondrel Ventures Limited](/company/10246519) (10246519)




## Companies at the same address

- [Aion Silicon Limited](/company/04491953) (04491953)
- [Alula Health Limited](/company/13230671) (13230671)
- [Alula Insurtech Ltd](/company/14359357) (14359357)
- [Alula Technologies Ltd](/company/14353721) (14353721)
- [Greydom UK Ltd](/company/15190657) (15190657)
- [ROX Equity Partners Limited](/company/10937650) (10937650)
- [ROX Technologies Ltd](/company/15741689) (15741689)
- [Sondrel Ventures Limited](/company/10246519) (10246519)
- [Woodpecker International Limited](/company/13220080) (13220080)