- Companies
- Installers
- Londonderry
- Dams Contractors Ltd
Dams Contractors Ltd
- Company number
- NI721324
- Incorporated
- 17 Sep 20242 years trading
- Registered office
- 64 Kingsmere Gardens, Londonderry, BT47 5TR
- Nature of business
- Other construction installation
Dams Contractors Ltd is a 2-year-old private limited company registered in Londonderry, company number NI721324, one of 17 installation companies (insulation, lifts, shutters and similar) in Londonderry. Its next accounts are due at Companies House on 30 June 2027, and the CT600 for the period to 30 September 2026 is due at HMRC on 30 September 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Financial snapshot, 2025
From the balance sheet at 30 September 2025, as filed at Companies House.
Where Dams Contractors Ltd is registered
The registered office is in Londonderry (BT47), in the Derry City and Strabane local authority area, Northern Ireland. Show BT47 5TR on a map.
Other trade companies in BT47
- RNK Contracts LimitedGroundworks and demolition
- Den Electrical LtdElectricians
- BDK Consulting LimitedProperty developers
- Oakline Engineering LtdInstallers
- Killew Property Services LimitedFacilities management
- PH Autobody LimitedMechanics and garages
- C Doherty Autos LtdMechanics and garages
- CPMH LtdBuilders
What happens if Dams Contractors 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 30 June 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jul 2027 to 31 Jul 2027 | £150 |
| 1 to 3 months late | 1 Aug 2027 to 30 Sep 2027 | £375 |
| 3 to 6 months late | 1 Oct 2027 to 31 Dec 2027 | £750 |
| More than 6 months late | From 1 Jan 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Oct 2027 | £200 |
| 3 months late | 30 Dec 2027 | another £200 |
| 6 months late | 30 Mar 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Sep 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
- NI721324
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 17 September 2024 (2 years ago)
- Registered office
- 64 Kingsmere Gardens, Londonderry, BT47 5TR
- Nature of business
- Other construction installation (SIC 43290)
- Year end
- 30 September (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 September 2025
- Last confirmation statement
- 16 September 2025
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 Londonderry
Other active installation companies (insulation, lifts, shutters and similar) registered in Londonderry.
- E.MCC Contracts Ltd2025
- Elite Partitions Ltd2018
- Glenturas Construction Limited2013
- H & C Construction Services Ltd2019
- McCallion Interior Systems Ltd2025
- Passive Airtight Solutions Ltd2025
- Rfe Contracts Limited2025
- Rock Shelving Limited2023
All installation companies (insulation, lifts, shutters and similar) in Londonderry · All trades in Londonderry · Installers across the UK
Frequently asked questions
When are Dams Contractors Ltd's accounts due?
Dams Contractors Ltd's next accounts are due at Companies House by 30 June 2027 (in 260 days), covering the period to 30 September 2026.
When is Dams Contractors Ltd's CT600 due?
The CT600 for the period to 30 September 2026 is due at HMRC by 30 September 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 July 2027.
Is Dams Contractors Ltd still trading?
Dams Contractors 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 Dams Contractors Ltd do?
Dams Contractors Ltd is registered under Other construction installation (SIC 43290).
How old is Dams Contractors Ltd?
Dams Contractors Ltd was incorporated on 17 September 2024, 2 years ago.
What is the penalty if Dams Contractors 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 Dams Contractors 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.