# Sidereus (Topco) Limited

## Details

- **Company number:** [17355100](https://find-and-update.company-information.service.gov.uk/company/17355100)
- **Status:** Active
- **Type:** Private Limited Company
- **Incorporated:** 22 Jul 2026
- **Registered office:** ONE EAGLE PLACE, LONDON, SW1Y 6AF
- **Nature of business:** [82990](/sic/82990) Other business support service activities n.e.c.
- **Corporate group:** [Group Holdco 1 Limited](/group/74317) (563 companies)



## Officers

| Name | Role | Appointed | Resigned |
|---|---|---|---|
| MCCORMICK, Fiona | director | 22 Jul 2026 |  |
| DELANEY, Stephen Ross | director | 22 Jul 2026 |  |



## Control

| Name | Nature of control | Notified | Ceased |
|---|---|---|---|
| Bowmark Capital Llp | significant-influence-or-control | 22 Jul 2026 |  |
| Bowmark Capital Partners Vii Nominees Limited | voting-rights-75-to-100-percent, right-to-appoint-and-remove-directors | 22 Jul 2026 |  |




## Owned by

Sidereus (Topco) Limited → [Bowmark Capital LLP](/company/OC331233)



## Controls

- [Sidereus (Midco 1) Limited](/company/17355196) (17355196)



## Directors' other companies

- [DELANEY, Stephen Ross](/person/6327605) - director at [Sidereus (Bidco) Limited](/company/17355460)
- [DELANEY, Stephen Ross](/person/6327605) - director at [Purus (Bidco) Limited](/company/15841481)
- [DELANEY, Stephen Ross](/person/6327605) - director at [Purus (Topco) Limited](/company/15841052)
- [DELANEY, Stephen Ross](/person/6327605) - director at [Sidereus (Midco 2) Limited](/company/17355275)
- [DELANEY, Stephen Ross](/person/6327605) - llp-member at [Bowmark Capital LLP](/company/OC331233)
- [DELANEY, Stephen Ross](/person/6327605) - director at [Santorini (Midco 2) Limited](/company/14213997)
- [DELANEY, Stephen Ross](/person/6327605) - director at [Santorini (Topco) Limited](/company/14212811)
- [DELANEY, Stephen Ross](/person/6327605) - director at [Santorini (Midco 1) Limited](/company/14213442)
- [DELANEY, Stephen Ross](/person/6327605) - director at [Santorini (Bidco) Limited](/company/14216254)
- [DELANEY, Stephen Ross](/person/6327605) - director at [Purus (Midco) Limited](/company/15841321)



## Companies at the same address

- [Bowmark Capital Partners Vi, Nominees Limited](/company/11897163) (11897163)
- [Bowmark Capital Partners Vii Nominees Limited](/company/15623726) (15623726)
- [Bowmark Gp Vi LLP](/company/OC423817) (OC423817)
- [Bowmark Gp Vii LLP](/company/OC445411) (OC445411)
- [Bowmark Growth Gp LLP](/company/OC433741) (OC433741)
- [Bowmark Growth Investment Partnership Nominees Limited](/company/13404804) (13404804)
- [Bowmark Growth Investment Partnership-A, Nominees Limited](/company/13778449) (13778449)
- [Bowmark Growth Investment Partnership-B, Nominees Limited](/company/15705843) (15705843)
- [Bowmark Growth Investment Partnership-C, Nominees Limited](/company/15981705) (15981705)
- [Bowmark Growth Investment Partnership-D, Nominees Limited](/company/16901306) (16901306)