- Companies
- Cleaning companies
- Dumbarton
- SMKM Limited
SMKM Limited
- Company number
- SC854114
- Incorporated
- 30 Jun 20251 year trading
- Registered office
- 154 West Bridgend, Dumbarton, G82 4BT
- Nature of business
- Other cleaning services
SMKM Limited is a 1-year-old private limited company registered in Dumbarton, company number SC854114, one of 11 cleaning companies in Dumbarton. Its next accounts are due at Companies House on 31 March 2027, and its first CT600 is due at HMRC on 29 June 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 SMKM Limited is registered
The registered office is in Dumbarton (G82), in the West Dunbartonshire local authority area, Scotland. Show G82 4BT on a map.
Other trade companies in G82
- Mintedcs LtdRoofers
- RT Electrical Services Scotland LtdElectricians
- Central Heating Scotland LtdPlumbers and heating engineers
- Carberry R.H LtdMachinery repair and installation
- RGM Window Cleaning LimitedCleaning companies
- Maxwell's Air Conditioning LtdPlumbers and heating engineers
- Plasterforce LtdPlasterers
- NCL Engineering LtdCivil engineering
What happens if SMKM 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 31 March 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Apr 2027 to 30 Apr 2027 | £150 |
| 1 to 3 months late | 1 May 2027 to 30 Jun 2027 | £375 |
| 3 to 6 months late | 1 Jul 2027 to 30 Sep 2027 | £750 |
| More than 6 months late | From 1 Oct 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jul 2027 | £200 |
| 3 months late | 30 Sep 2027 | another £200 |
| 6 months late | 30 Dec 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Jun 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
- SC854114
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 30 June 2025 (1 year ago)
- Registered office
- 154 West Bridgend, Dumbarton, G82 4BT
- Nature of business
- Other cleaning services (SIC 81299)
- Year end
- 30 June (accounting reference date)
- Accounts type
- No accounts filed yet
Filing notes for cleaning companies
Cleaning companies are often staff-heavy, so wages, pension contributions and the employment allowance all show up in the accounts.
Similar companies in Dumbarton
Other active cleaning companies registered in Dumbarton.
- Steve Pullen Limited2008
- Bug Away Pest Control Ltd.2024
- Cardross Road Valeting Centre Ltd2024
- D H Cleaning Services Ltd2015
- DLC Exterior Building Cleaning Ltd2026
- DLC Window Cleaning Ltd2026
- Lomond Property Services Ltd2026
- Magical Maids Ltd2025
All cleaning companies in Dumbarton · All trades in Dumbarton · Cleaning companies across the UK
Frequently asked questions
When are SMKM Limited's accounts due?
SMKM Limited's next accounts are due at Companies House by 31 March 2027 (in 170 days), covering the period to 30 June 2026.
When is SMKM 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 29 June 2026, due by 29 June 2027, and one for the period to 30 June 2026, due by 30 June 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is SMKM Limited still trading?
SMKM Limited is listed as active on the Companies House register (checked 12 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 SMKM Limited do?
SMKM Limited is registered under Other cleaning services (SIC 81299).
How old is SMKM Limited?
SMKM Limited was incorporated on 30 June 2025, 1 year ago.
What is the penalty if SMKM 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 SMKM Limited on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 12 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.