SYNTHESYS DEFENCE SYSTEMS (SDS) LIMITED
Company details
- Registered name
- SYNTHESYS DEFENCE SYSTEMS (SDS) LIMITED
- Company number
- 02204802
- Registered office
- DALMAR HOUSE BARRAS LANE ESTATE, DALSTON, CARLISLE, CA5 7NY, UNITED KINGDOM
- Company type
- Private Limited Company
- Incorporated on
- 11 December 1987
- Status
- Active
- Age
- 38 years
- Previous names
- SYNTHESYS SYSTEMS ENGINEERS LIMITED (to 05 Mar 2025)
- Nature of business (SIC)
- 62090 — Other information technology service activities · 72190 — Other research and experimental development on natural sciences and engineering · 74909 — Other professional, scientific and technical activities n.e.c.
- Accounts — next due
- 30 Sept 2026
- Accounts — last made up to
- 31 Dec 2024
- Confirmation statement — next due
- 10 Apr 2027
- Confirmation statement — last
- 27 Mar 2026
What the register says
Facts from the register, with the dates they are filed under. Not a score: what they mean is for you to judge, and every line can be checked against Companies House itself.
- 1 of 3 registered charges outstanding — a lender has a claim over the assets.
- 92 companies are registered at this address — commonly a formation agent or an accountant rather than an office.
Companies House register snapshot, read 02/09/2026.
People with significant control
Beneficial owners holding over 25% of shares, voting rights or the right to appoint directors
Corporate structure
Who controls this company, and who they control in turn
Connections
Change history
Reconstructed from the dated records Companies House publishes
| Date | Change | Was | Now |
|---|---|---|---|
| 05/03/2025 | Registered name changed | SYNTHESYS SYSTEMS ENGINEERS LIMITED | SYNTHESYS DEFENCE SYSTEMS (SDS) LIMITED |
| 22/11/2024 | Person with significant control ceased | Dr John Stephen Hartas | — |
| 22/11/2024 | Person with significant control added | — | Delkia Limited |
| 06/04/2016 | Person with significant control added | — | Dr John Stephen Hartas |
Documents for SYNTHESYS DEFENCE SYSTEMS (SDS) LIMITED
Need this one company on file? Buy the document on its own — no plan required.
The full registration record as held today — name, number, status, registered office, company type, previous names, officers, PSC and SIC codes, timestamped for your file.
Every figure the company’s own accounts state, across each filed period, with year-on-year movement. Most UK companies file small or micro-entity accounts — a balance sheet and a headcount, no turnover or profit.
Who controls the company: persons with significant control, the nature of that control, the ownership graph and every other company those controllers hold.
Data protection register
No entry found on the ICO register of fee payers under this name.
Not every organisation has to register — some are exempt. An absent entry is a question to ask, not a finding.
Get this company via API
Every field on this page is available as structured JSON behind one endpoint and one API key.
GET /v1/company/gb/02204802
X-Api-Key: $OPENDATA_KEYFrequently asked questions
What is the company number of SYNTHESYS DEFENCE SYSTEMS (SDS) LIMITED?▾
Where is SYNTHESYS DEFENCE SYSTEMS (SDS) LIMITED registered?▾
What is the SIC code of SYNTHESYS DEFENCE SYSTEMS (SDS) LIMITED?▾
Who controls SYNTHESYS DEFENCE SYSTEMS (SDS) LIMITED?▾
When are the next accounts of SYNTHESYS DEFENCE SYSTEMS (SDS) LIMITED due?▾
About SYNTHESYS DEFENCE SYSTEMS (SDS) LIMITED (02204802)
SYNTHESYS DEFENCE SYSTEMS (SDS) LIMITED is a private limited company incorporated on 11 December 1987 and registered in the United Kingdom under company number 02204802. Its registered office is at DALMAR HOUSE BARRAS LANE ESTATE, DALSTON, CARLISLE, CA5 7NY, UNITED KINGDOM. The recorded nature of business is other information technology service activities (SIC 62090). The company is currently active , with statutory accounts last made up to 31 December 2024. , and the person with significant control is Delkia Limited. This profile is provided by opendata.bot by Noetikos, aggregating official data from Companies House bulk data , last refreshed 2 September 2026.
Companies at the same registered office
Other information technology service activities across UK registers
The same sector and the same company, seen through every register we hold
Explore by sector
Every UK company records what it does as a SIC code — browse the sectors around this one.