- Companies
- Motor traders
- Cardiff
- SM Auto Works Ltd
SM Auto Works Ltd
- Company number
- 16178489
- Incorporated
- 13 Jan 20251 year trading
- Registered office
- L5, Seawall Road, Cardiff, Portmanmoor Road Industrial Estate, Cardiff, CF24 5HB
- Nature of business
- Sale of used cars and light motor vehicles; Maintenance and repair of motor vehicles
SM Auto Works Ltd is a 1-year-old private limited company registered in Cardiff, company number 16178489, one of 263 motor trade companies in Cardiff. Its next accounts are due at Companies House on 13 October 2026, and its first CT600 is due at HMRC on 12 January 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 SM Auto Works Ltd is registered
The registered office is in Cardiff (CF24), in the Cardiff local authority area, Wales. Show CF24 5HB on a map.
Other trade companies in CF24
- New Capital Tyres LtdMotor traders
- Beza Home Climate LtdPlumbers and heating engineers
- Jafa Construction LtdBuilders
- A R Lawn Care & Garden Services LtdLandscapers and gardeners
- RK Asset & Trading Co LtdMotor traders
- ZCC Garage LtdMechanics and garages
- Szot LtdPlasterers
- Oceanway Tyres LtdMechanics and garages
What happens if SM Auto Works 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 13 October 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 14 Oct 2026 to 13 Nov 2026 | £150 |
| 1 to 3 months late | 14 Nov 2026 to 13 Jan 2027 | £375 |
| 3 to 6 months late | 14 Jan 2027 to 13 Apr 2027 | £750 |
| More than 6 months late | From 14 Apr 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Feb 2027 | £200 |
| 3 months late | 30 Apr 2027 | another £200 |
| 6 months late | 31 Jul 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jan 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
- 16178489
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 13 January 2025 (1 year ago)
- Registered office
- L5, Seawall Road, Cardiff, Portmanmoor Road Industrial Estate, Cardiff, CF24 5HB
- Nature of business
- Sale of used cars and light motor vehicles (SIC 45112)
Maintenance and repair of motor vehicles (SIC 45200) - Year end
- 31 January (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 12 January 2026
Filing notes for motor trade companies
Motor trade companies hold vehicle stock, and how that stock is valued at the year end moves the profit directly. Some use the VAT margin scheme.
Similar companies in Cardiff
Other active motor trade companies registered in Cardiff.
- SNWN Automotive Ltd2019
- So Babs International Auto Limited2025
- Soro Services Ltd2026
- South Wales Piston Services Limited1979
- Spare Auto Parts Ltd2026
- Spartacus Vehicle Recycling Ltd2026
- Spire Vehicles Ltd2025
- ST Fagans Garage Ltd2026
All motor trade companies in Cardiff · All trades in Cardiff · Motor traders across the UK
Frequently asked questions
When are SM Auto Works Ltd's accounts due?
SM Auto Works Ltd's next accounts are due at Companies House by 13 October 2026 (today), covering the period to 31 January 2026.
When is SM Auto Works 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 12 January 2026, due by 12 January 2027, and one for the period to 31 January 2026, due by 31 January 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is SM Auto Works Ltd still trading?
SM Auto Works 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 SM Auto Works Ltd do?
SM Auto Works Ltd is registered under Sale of used cars and light motor vehicles (SIC 45112); Maintenance and repair of motor vehicles (SIC 45200).
How old is SM Auto Works Ltd?
SM Auto Works Ltd was incorporated on 13 January 2025, 1 year ago.
What is the penalty if SM Auto Works 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 SM Auto Works 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.