- Companies
- Plumbers and heating engineers
- London
- Astra Altair Ltd
Astra Altair Ltd
- Company number
- 15953759
- Incorporated
- 12 Sep 20242 years trading
- Registered office
- 80 Cheapside, London, EC2V 6EE
- Nature of business
- Plumbing, heat and air-conditioning installation
Astra Altair Ltd is a 2-year-old private limited company registered in London, company number 15953759, one of 2,972 plumbing and heating companies in London. Companies House shows its accounts as overdue: they were due on 12 September 2026.
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.
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Where Astra Altair Ltd is registered
The registered office is in London (EC2V), in the City of London local authority area, London. Show EC2V 6EE on a map.
Other trade companies in EC2V
- HCL Remnants LimitedBuilders
- Chilmar Finance (UK) LtdProperty developers
- Altaven Group LimitedFinishing trades
- Ashton Lane Development LimitedProperty developers
- CPC Construction Management LimitedBuilders
- Astra Apex LtdMachinery repair and installation
- Astra Nova Group LtdMachinery repair and installation
- Erith Capital Developments LimitedProperty developers
Also registered at this address
4 other companies use the same registered office as Astra Altair Ltd.
- Astra Apex LtdMachinery repair and installation
- Astra Nova Group LtdMachinery repair and installation
- Astra Sirius LtdMachinery repair and installation
- Blueparks LimitedBuilders
What happens if Astra Altair Ltd files late
If the accounts reach Companies House today, the late filing penalty is £375 (£750 if last year's accounts were also late). It rises at each step below.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 13 Sep 2026 to 12 Oct 2026 | £150 |
| 1 to 3 months late | 13 Oct 2026 to 12 Dec 2026 | £375 |
| 3 to 6 months late | 13 Dec 2026 to 12 Mar 2027 | £750 |
| More than 6 months late | From 13 Mar 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jan 2027 | £200 |
| 3 months late | 31 Mar 2027 | another £200 |
| 6 months late | 30 Jun 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Dec 2027 | 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
- 15953759
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 12 September 2024 (2 years ago)
- Registered office
- 80 Cheapside, London, EC2V 6EE
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 December (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 11 September 2026
- Charges (mortgages)
- 2 outstanding of 4 registered
Filing notes for plumbing and heating companies
Plumbing and heating companies frequently work under CIS for main contractors and also directly for homeowners, so turnover can mix CIS and non-CIS income.
Similar companies in London
Other active plumbing and heating companies registered in London.
- Astreon Trade Limited2026
- At Buildings Contractor Limited2015
- At Plumbers Ltd2020
- Atkinson Compliance Ltd2025
- Atlantis Heating Services Ltd2020
- Atlas Mechanical Engineering Limited2026
- Atp Maintenance (London) Limited2013
- Attain Plumbing & Heating Ltd2025
All plumbing and heating companies in London · All trades in London · Plumbers and heating engineers across the UK
Frequently asked questions
When are Astra Altair Ltd's accounts due?
Astra Altair Ltd's accounts were due at Companies House on 12 September 2026 and the register shows them as overdue.
When is Astra Altair 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 11 September 2025, due by 11 September 2026, and one for the period to 31 December 2025, due by 31 December 2026. Corporation tax is payable 9 months and 1 day after the end of each.
Is Astra Altair Ltd still trading?
Astra Altair Ltd is listed as active on the Companies House register (checked 13 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 Astra Altair Ltd do?
Astra Altair Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Astra Altair Ltd?
Astra Altair Ltd was incorporated on 12 September 2024, 2 years ago.
What is the penalty if Astra Altair 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 Astra Altair Ltd on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 13 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.