- Companies
- Electricians
- Wallingford
- S.Dorn Electrical Contractor Limited
S.Dorn Electrical Contractor Limited
- Company number
- 16184563
- Incorporated
- 15 Jan 20251 year trading
- Registered office
- 31 Newnham Green, Crowmarsh Gifford, Wallingford, OX10 8EW
- Nature of business
- Electrical installation
S.Dorn Electrical Contractor Limited is a 1-year-old private limited company registered in Wallingford, company number 16184563, one of 9 electrical contractors in Wallingford. Its next accounts are due at Companies House on 15 October 2026, and its first CT600 is due at HMRC on 14 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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Financial snapshot, 2026
From the balance sheet at 31 January 2026, as filed at Companies House.
Where S.Dorn Electrical Contractor Limited is registered
The registered office is in Wallingford (OX10), in the South Oxfordshire local authority area, South East. Show OX10 8EW on a map.
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What happens if S.Dorn Electrical Contractor 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 15 October 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 16 Oct 2026 to 15 Nov 2026 | £150 |
| 1 to 3 months late | 16 Nov 2026 to 15 Jan 2027 | £375 |
| 3 to 6 months late | 16 Jan 2027 to 15 Apr 2027 | £750 |
| More than 6 months late | From 16 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
- 16184563
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 15 January 2025 (1 year ago)
- Registered office
- 31 Newnham Green, Crowmarsh Gifford, Wallingford, OX10 8EW
- Nature of business
- Electrical installation (SIC 43210)
- Year end
- 31 January (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 14 January 2026
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 Wallingford
Other active electrical contractors registered in Wallingford.
- The Booys Ltd2025
- Vokins Electrical Contractors Limited2020
- DRG Oxford Electrical Limited2020
- Environmental Building Services Limited2007
- Goodson Electrical Limited2018
- Link Electrical Contractors Ltd2013
- NW Electrical Services Ltd2020
- Oatpoint Limited1965
All electrical contractors in Wallingford · All trades in Wallingford · Electricians across the UK
Frequently asked questions
When are S.Dorn Electrical Contractor Limited's accounts due?
S.Dorn Electrical Contractor Limited's next accounts are due at Companies House by 15 October 2026 (in 2 days), covering the period to 31 January 2026.
When is S.Dorn Electrical Contractor 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 14 January 2026, due by 14 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 S.Dorn Electrical Contractor Limited still trading?
S.Dorn Electrical Contractor Limited 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 S.Dorn Electrical Contractor Limited do?
S.Dorn Electrical Contractor Limited is registered under Electrical installation (SIC 43210).
How old is S.Dorn Electrical Contractor Limited?
S.Dorn Electrical Contractor Limited was incorporated on 15 January 2025, 1 year ago.
What is the penalty if S.Dorn Electrical Contractor 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 S.Dorn Electrical Contractor Limited 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.