- Companies
- Installers
- Feltham
- Altstar Systems Ltd
Altstar Systems Ltd
- Company number
- 16544294
- Incorporated
- 26 Jun 20251 year trading
- Registered office
- 3 Newgate Close, Feltham, TW13 5LG
- Nature of business
- Other construction installation; Other specialised construction activities n.e.c.; Other engineering activities; Technical testing and analysis
Altstar Systems Ltd is a 1-year-old private limited company registered in Feltham, company number 16544294, one of 41 installation companies (insulation, lifts, shutters and similar) in Feltham. Its next accounts are due at Companies House on 26 March 2027, and its first CT600 is due at HMRC on 25 June 2027.
Key dates
This company has not filed accounts yet. First accounts are due 21 months after incorporation, and the first period can run longer than a year.
Is this your company?
File the first accounts to Companies House and the CT600 to HMRC yourself with A.X.E.L Filing. One set of questions, both filings, £49 flat. No accountant, no subscription.
File for Altstar Systems LtdOr get a reminder before each deadline
Free. We email you 60, 30, 14, 7 and 1 days before the accounts, CT600 and confirmation statement are due. Unsubscribe in one click.
Where Altstar Systems Ltd is registered
The registered office is in Feltham (TW13), in the Hounslow local authority area, London. Show TW13 5LG on a map.
Other trade companies in TW13
- Neir LtdBuilders
- A Lime Plastering LtdSpecialist contractors
- True Ridge Roofing LimitedBuilders
- Kitchh LtdInstallers
- Gelli TK LtdCleaning companies
- Universal Pest Control LtdCleaning companies
- DCD Build LtdBuilders
- K27 Build LtdBuilders
What happens if Altstar Systems Ltd files late
Companies House charges an automatic penalty the day after the deadline, and it rises the longer the accounts are late. These are the dates for this company's accounts due on 26 March 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 27 Mar 2027 to 26 Apr 2027 | £150 |
| 1 to 3 months late | 27 Apr 2027 to 26 Jun 2027 | £375 |
| 3 to 6 months late | 27 Jun 2027 to 26 Sep 2027 | £750 |
| More than 6 months late | From 27 Sep 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jul 2027 | £200 |
| 3 months late | 30 Sep 2027 | another £200 |
| 6 months late | 30 Dec 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Jun 2028 | another 10% of any unpaid tax |
For returns filed on or after 1 April 2026. Late three times in a row and the £200 penalties become £1,000 each.
Company details
As held on the Companies House register.
- Company number
- 16544294
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 26 June 2025 (1 year ago)
- Registered office
- 3 Newgate Close, Feltham, TW13 5LG
- Nature of business
- Other construction installation (SIC 43290)
Other specialised construction activities n.e.c. (SIC 43999)
Other engineering activities (SIC 71129)
Technical testing and analysis (SIC 71200) - Year end
- 30 June (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 25 June 2026
Filing notes for installation companies (insulation, lifts, shutters and similar)
Installation companies (insulation, lifts, shutters, solar and similar) often buy stock and equipment up front, so stock at the year end and capital allowances both affect the tax bill.
Similar companies in Feltham
Other active installation companies (insulation, lifts, shutters and similar) registered in Feltham.
- Asgb Works Limited2019
- Blindsfitted4U Limited2018
- C & A Building Solutions Limited2013
- CGR Businesses Ltd2005
- Core Services Provider Ltd2025
- Craneconnect Ltd2024
- Dineko Ltd2020
- Dulay Construction Ltd2018
All installation companies (insulation, lifts, shutters and similar) in Feltham · All trades in Feltham · Installers across the UK
Frequently asked questions
When are Altstar Systems Ltd's accounts due?
Altstar Systems Ltd's next accounts are due at Companies House by 26 March 2027 (in 165 days), covering the period to 30 June 2026.
When is Altstar Systems Ltd's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 25 June 2026, due by 25 June 2027, and one for the period to 30 June 2026, due by 30 June 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Altstar Systems Ltd still trading?
Altstar Systems Ltd is listed as active on the Companies House register as of 1 Oct 2026. Active means it has not been dissolved or entered insolvency; it does not show whether it is currently taking on work.
What does Altstar Systems Ltd do?
Altstar Systems Ltd is registered under Other construction installation (SIC 43290); Other specialised construction activities n.e.c. (SIC 43999); Other engineering activities (SIC 71129); Technical testing and analysis (SIC 71200).
How old is Altstar Systems Ltd?
Altstar Systems Ltd was incorporated on 26 June 2025, 1 year ago.
What is the penalty if Altstar Systems Ltd files its accounts late?
Companies House charges £150 if the accounts are up to 1 month late, £375 up to 3 months, £750 up to 6 months and £1,500 after that, doubled if the previous year's accounts were also late. HMRC charges £200 for a CT600 filed a day late and another £200 at 3 months.
Official records
View Altstar Systems Ltd on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026). Deadlines are worked out from the register and assume a standard accounting period; a change of year end or a short period moves them. This page is general information, not tax or accountancy advice.