- Company number
- 17413993
- Incorporated
- 21 Aug 2026
- Registered office
- 131 King Edward's Road, Swansea, SA1 4LW
- Nature of business
- Construction of commercial buildings; Construction of domestic buildings
Unnam Limited is a newly incorporated private limited company registered in Swansea, company number 17413993, one of 204 building contractors in Swansea. Its next accounts are due at Companies House on 21 May 2028, and its first CT600 is due at HMRC on 20 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 Unnam Limited is registered
The registered office is in Swansea (SA1), in the Swansea local authority area, Wales. Show SA1 4LW on a map.
Other trade companies in SA1
- JDS Ringside Customs LtdRepair services
- D & M Carpentry and Construction LimitedCivil engineering
- Westway Window Systems LimitedJoiners and carpenters
- International Classic Car Sales LtdMotor traders
- Edefec LtdBuilders
- Swansea Scaffolding Services LtdScaffolders
- Lou's Paint and Finish LimitedPainters and decorators
- Mesa Property Development LtdProperty developers
What happens if Unnam Limited 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 21 May 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 22 May 2028 to 21 Jun 2028 | £150 |
| 1 to 3 months late | 22 Jun 2028 to 21 Aug 2028 | £375 |
| 3 to 6 months late | 22 Aug 2028 to 21 Nov 2028 | £750 |
| More than 6 months late | From 22 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
- 17413993
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 21 August 2026
- Registered office
- 131 King Edward's Road, Swansea, SA1 4LW
- Nature of business
- Construction of commercial buildings (SIC 41201)
Construction of domestic buildings (SIC 41202) - 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 Swansea
Other active building contractors registered in Swansea.
- V & C (SW) Properties Limited2013
- V and D Properties Ltd2023
- V B Griffiths (Building & Roofing) Limited2002
- VM Construction Group Ltd2025
- Watts Brickwork Limited2007
- Weegy Housing Limited2014
- William W Fyall Limited2010
- Williams Building & Roofing Services Ltd2026
All building contractors in Swansea · All trades in Swansea · Builders across the UK
Frequently asked questions
When are Unnam Limited's accounts due?
Unnam Limited's next accounts are due at Companies House by 21 May 2028 (in 586 days), covering the period to 31 August 2027.
When is Unnam Limited's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 20 August 2027, due by 20 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 Unnam Limited still trading?
Unnam Limited 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 Unnam Limited do?
Unnam Limited is registered under Construction of commercial buildings (SIC 41201); Construction of domestic buildings (SIC 41202).
How old is Unnam Limited?
Unnam Limited was incorporated on 21 August 2026, less than a year ago.
What is the penalty if Unnam Limited 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 Unnam Limited 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.