- Companies
- Electricians
- Rotherham
- S12N Ltd
S12N Ltd
- Company number
- 17010696
- Incorporated
- 3 Feb 2026
- Registered office
- 18A Rother Court, Rotherham, S62 6DR
- Nature of business
- Electrical installation
S12N Ltd is a newly incorporated private limited company registered in Rotherham, company number 17010696, one of 150 electrical contractors in Rotherham. Its next accounts are due at Companies House on 3 November 2027, and its first CT600 is due at HMRC on 2 February 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.
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Where S12N Ltd is registered
The registered office is in Rotherham (S62), in the Rotherham local authority area, Yorkshire and The Humber. Show S62 6DR on a map.
Other trade companies in S62
- KWB Joinery Services LtdJoiners and carpenters
- Elite Property Prep LtdCleaning companies
- A&R Property Services LtdProperty developers
- Hamco Construction LtdBuilders
- L Carroll Roofing LimitedRoofers
- Rovrum Plastering LtdPlasterers
- D Downs Interiors LtdSpecialist contractors
- MLH Power System LtdMachinery repair and installation
Shared registered office
34 companies on our pages use this registered office address. An address shared this widely is usually an accountant's office or a company formation agent's service address, not where the business trades from.
What happens if S12N 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 3 November 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 4 Nov 2027 to 3 Dec 2027 | £150 |
| 1 to 3 months late | 4 Dec 2027 to 3 Feb 2028 | £375 |
| 3 to 6 months late | 4 Feb 2028 to 3 May 2028 | £750 |
| More than 6 months late | From 4 May 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2028 | £200 |
| 3 months late | 30 Jun 2028 | another £200 |
| 6 months late | 30 Sep 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- 17010696
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 3 February 2026
- Registered office
- 18A Rother Court, Rotherham, S62 6DR
- Nature of business
- Electrical installation (SIC 43210)
- Year end
- 31 March (accounting reference date)
- Accounts type
- No accounts filed yet
Filing notes for electrical contractors
Electrical contracting companies are often a director plus a van and tools. Most fall within the micro-entity rules, so the accounts filed at Companies House are short, and the CT600 carries the tax detail.
Similar companies in Rotherham
Other active electrical contractors registered in Rotherham.
- S13 Electrical Limited2026
- Sat City Aerial and Satellite Services Ltd2025
- Scholes Electrical Services Limited2011
- Seven Hills Electrical Ltd2007
- Shaw Integrated Systems Ltd2026
- SMC Facilities Management Ltd2020
- Solair Systems UK Ltd2026
- Solaris Renewables Ltd2026
All electrical contractors in Rotherham · All trades in Rotherham · Electricians across the UK
Frequently asked questions
When are S12N Ltd's accounts due?
S12N Ltd's next accounts are due at Companies House by 3 November 2027 (in 386 days), covering the period to 31 March 2027.
When is S12N 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 2 February 2027, due by 2 February 2028, and one for the period to 31 March 2027, due by 31 March 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is S12N Ltd still trading?
S12N 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 S12N Ltd do?
S12N Ltd is registered under Electrical installation (SIC 43210).
How old is S12N Ltd?
S12N Ltd was incorporated on 3 February 2026, less than a year ago.
What is the penalty if S12N 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 S12N 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.