Filing status
- Accounts due
- 30 June 2027
- Last accounts
- 31 December 2025
- Conf. stmt due
- 30 January 2027
- Last conf. stmt
- 16 January 2026
Castle Support Services PLC
- Incorporated
- 3 February 2005 (21 years)
- Previously known as
- Castle Acquisitions PLC (until 18 June 2007)This list may be incomplete. See all names on Companies House
- Industry
- Non-trading company (74990)
- Owned by
- Accounts type
- Dormant
- Region
- Yorkshire
- Address
- C/o Sulzer (UK) Holdings LimitedManor Mill LaneLeedsLS11 8BR
Officers 2 active
Officer details are public data from the Companies House register.
Director · Appointed 10 December 2025
British
Born February 1982 (44)
Director · Appointed 19 March 2024
British
Born March 1973 (53)
Officer history (17 former)
10 December 2025
10 December 2025
19 March 2024
7 March 2024
4 July 2022
4 July 2022
1 August 2019
1 August 2019
28 March 2018
27 March 2018
22 December 2017
1 February 2017
10 August 2016
12 July 2016
28 July 2010
28 July 2010
28 July 2010
28 July 2010
28 July 2010
14 June 2010
14 June 2010
14 June 2010
1 August 2008
19 July 2007
19 June 2007
19 June 2007
19 June 2007
19 June 2007
19 June 2007
19 June 2007
19 June 2007
19 June 2007
16 February 2005
3 February 2005
3 February 2005
3 February 2005
Ownership 1 active
People and entities with significant control, from the Companies House PSC register
Limited Company
Reg. no. 3347095
Group structure 16 companies
Ownership group derived from the Companies House PSC register
Castle Support Services PLC This company Owns 75–100% of shares
DM Technical Services Limited Owns 75–100% of shares
Dowding and Mills Limited Owns 75–100% of shares
Sulzer (Aberdeen) Limited Owns 50–75% of shares
Sulzer Chemtech (UK) Limited Owns 75–100% of shares
Sulzer GT Aero Services Limited Owns 75–100% of shares
Sulzer Limited Owns 75–100% of shares
Dowding & Mills (Nominees) Limited Owns 75–100% of shares
Eleco Dowding & Mills Limited Owns 75–100% of shares
Sulzer (UK) Limited Owns 75–100% of shares
Sulzer Pumps (UK) Limited Owns 75–100% of shares
Sulzer Pumps Wastewater UK Limited Owns 75–100% of shares
Sulzer Services (UK) Limited Owns 75–100% of shares
Dowding & Mills (Overseas) Limited Owns 75–100% of shares
Dowding & Mills Luxembourg Limited Owns 75–100% of shares
Filings
Recent filings only. See the full history on Companies House
| Date | Description | Made Up To | Pages | |
|---|---|---|---|---|
| 10 March 2026 | Accounts for a dormant company | 31 December 2025 | ||
| 16 January 2026 | Confirmation statement with no updates | 16 January 2026 | ||
| 19 December 2025 | Termination of appointment of a director | |||
| 16 December 2025 | Appointment of a director | |||
| 2 April 2025 | Accounts for a dormant company | 31 December 2024 |
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