- Companies
- Installers
- Stockport
- Dco Marine Services Ltd
Dco Marine Services Ltd
- Company number
- 16618526
- Incorporated
- 31 Jul 20251 year trading
- Registered office
- Flat 5, 26 Tatton Road South, Stockport, SK4 4LU
- Nature of business
- Other construction installation
Dco Marine Services Ltd is a 1-year-old private limited company registered in Stockport, company number 16618526, one of 104 installation companies (insulation, lifts, shutters and similar) in Stockport. Its next accounts are due at Companies House on 30 April 2027, and its first CT600 is due at HMRC on 30 July 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.
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Where Dco Marine Services Ltd is registered
The registered office is in Stockport (SK4), in the Stockport local authority area, North West. Show SK4 4LU on a map.
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What happens if Dco Marine Services 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 April 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 May 2027 to 31 May 2027 | £150 |
| 1 to 3 months late | 1 Jun 2027 to 31 Jul 2027 | £375 |
| 3 to 6 months late | 1 Aug 2027 to 31 Oct 2027 | £750 |
| More than 6 months late | From 1 Nov 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Aug 2027 | £200 |
| 3 months late | 31 Oct 2027 | another £200 |
| 6 months late | 31 Jan 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jul 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
- 16618526
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 31 July 2025 (1 year ago)
- Registered office
- Flat 5, 26 Tatton Road South, Stockport, SK4 4LU
- Nature of business
- Other construction installation (SIC 43290)
- Year end
- 31 July (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 30 July 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 Stockport
Other active installation companies (insulation, lifts, shutters and similar) registered in Stockport.
- Driveway Safety Limited2019
- E&R Driveways Limited2021
- Ebkb Limited2003
- Floorscape Solutions Group Ltd2025
- G Fletcher Builders (NW) Ltd2025
- Garry Granite Limited2021
- Ge Garage Doors Limited2020
- GMC Home Solutions Ltd2016
All installation companies (insulation, lifts, shutters and similar) in Stockport · All trades in Stockport · Installers across the UK
Frequently asked questions
When are Dco Marine Services Ltd's accounts due?
Dco Marine Services Ltd's next accounts are due at Companies House by 30 April 2027 (in 199 days), covering the period to 31 July 2026.
When is Dco Marine Services 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 30 July 2026, due by 30 July 2027, and one for the period to 31 July 2026, due by 31 July 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Dco Marine Services Ltd still trading?
Dco Marine Services 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 Dco Marine Services Ltd do?
Dco Marine Services Ltd is registered under Other construction installation (SIC 43290).
How old is Dco Marine Services Ltd?
Dco Marine Services Ltd was incorporated on 31 July 2025, 1 year ago.
What is the penalty if Dco Marine Services 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 Dco Marine Services 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.