- Company number
- 17396411
- Incorporated
- 12 Aug 2026
- Registered office
- 20 Hessel Street, London, E1 2LP
- Nature of business
- Construction of domestic buildings; Other building completion and finishing; Other specialised construction activities n.e.c.; Buying and selling of own real estate
Swanco Ltd is a newly incorporated private limited company registered in London, company number 17396411, one of 12,075 building contractors in London. Its next accounts are due at Companies House on 12 May 2028, and its first CT600 is due at HMRC on 11 August 2028.
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?
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Where Swanco Ltd is registered
The registered office is in London (E1), in the Tower Hamlets local authority area, London. Show E1 2LP on a map.
Other trade companies in E1
- Safa Builds LtdElectricians
- Ribh LtdElectricians
- Tyres on Call LtdMechanics and garages
- Hrautosources LtdMotor traders
- Choiceworks LimitedInstallers
- E.M Construction London LtdBuilders
- Qubic Maintenance LtdSpecialist contractors
- Moovin Transport LtdMechanics and garages
Also registered at this address
1 other company uses the same registered office as Swanco Ltd.
- DGN Constructions Ltd.Property developers
What happens if Swanco 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 12 May 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 13 May 2028 to 12 Jun 2028 | £150 |
| 1 to 3 months late | 13 Jun 2028 to 12 Aug 2028 | £375 |
| 3 to 6 months late | 13 Aug 2028 to 12 Nov 2028 | £750 |
| More than 6 months late | From 13 Nov 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Sep 2028 | £200 |
| 3 months late | 30 Nov 2028 | another £200 |
| 6 months late | 28 Feb 2029 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Aug 2029 | 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
- 17396411
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 12 August 2026
- Registered office
- 20 Hessel Street, London, E1 2LP
- Nature of business
- Construction of domestic buildings (SIC 41202)
Other building completion and finishing (SIC 43390)
Other specialised construction activities n.e.c. (SIC 43999)
Buying and selling of own real estate (SIC 68100) - Year end
- 31 August (accounting reference date)
- Accounts type
- No accounts filed yet
Filing notes for building contractors
Building companies often run the Construction Industry Scheme as a contractor, a subcontractor or both. CIS deductions suffered during the year are set against the PAYE bill, and any unrecovered balance at the year end matters when the accounts are drawn up.
Similar companies in London
Other active building contractors registered in London.
- Swati Ltd2026
- Sweentoi Ltd2011
- Swift Ceiling Solutions Ltd2025
- Swift Conversions Ltd2021
- Swift Struct Ltd2024
- Swift Structures Limited2019
- SWL Builders Ltd2026
- SWPL Ltd2026
All building contractors in London · All trades in London · Builders across the UK
Frequently asked questions
When are Swanco Ltd's accounts due?
Swanco Ltd's next accounts are due at Companies House by 12 May 2028 (in 577 days), covering the period to 31 August 2027.
When is Swanco 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 August 2027, due by 11 August 2028, and one for the period to 31 August 2027, due by 31 August 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is Swanco Ltd still trading?
Swanco 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 Swanco Ltd do?
Swanco Ltd is registered under Construction of domestic buildings (SIC 41202); Other building completion and finishing (SIC 43390); Other specialised construction activities n.e.c. (SIC 43999); Buying and selling of own real estate (SIC 68100).
How old is Swanco Ltd?
Swanco Ltd was incorporated on 12 August 2026, less than a year ago.
What is the penalty if Swanco 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 Swanco 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.