- Companies
- Installers
- Henley on Thames
- SDL Oxford Ltd
SDL Oxford Ltd
- Company number
- 16379486
- Incorporated
- 10 Apr 20251 year trading
- Registered office
- 36 Van Alloys, Business Park, Henley on Thames, RG9 5QW
- Nature of business
- Other construction installation
SDL Oxford Ltd is a 1-year-old private limited company registered in Henley on Thames, company number 16379486, one of the UK's installation companies (insulation, lifts, shutters and similar). Its next accounts are due at Companies House on 10 January 2027, and its first CT600 is due at HMRC on 9 April 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 SDL Oxford Ltd is registered
The registered office is in Henley on Thames (RG9), in the South Oxfordshire local authority area, South East. Show RG9 5QW on a map.
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What happens if SDL Oxford 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 10 January 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 11 Jan 2027 to 10 Feb 2027 | £150 |
| 1 to 3 months late | 11 Feb 2027 to 10 Apr 2027 | £375 |
| 3 to 6 months late | 11 Apr 2027 to 10 Jul 2027 | £750 |
| More than 6 months late | From 11 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Oct 2027 | £200 |
| 3 months late | 30 Dec 2027 | another £200 |
| 6 months late | 30 Mar 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Sep 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
- 16379486
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 10 April 2025 (1 year ago)
- Registered office
- 36 Van Alloys, Business Park, Henley on Thames, RG9 5QW
- Nature of business
- Other construction installation (SIC 43290)
- Year end
- 30 September (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 9 April 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 Henley on Thames
Other active installation companies (insulation, lifts, shutters and similar) registered in Henley on Thames.
All installation companies (insulation, lifts, shutters and similar) in Henley on Thames · All trades in Henley on Thames · Installers across the UK
Frequently asked questions
When are SDL Oxford Ltd's accounts due?
SDL Oxford Ltd's next accounts are due at Companies House by 10 January 2027 (in 89 days), covering the period to 30 September 2026.
When is SDL Oxford 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 9 April 2026, due by 9 April 2027, and one for the period to 30 September 2026, due by 30 September 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is SDL Oxford Ltd still trading?
SDL Oxford 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 SDL Oxford Ltd do?
SDL Oxford Ltd is registered under Other construction installation (SIC 43290).
How old is SDL Oxford Ltd?
SDL Oxford Ltd was incorporated on 10 April 2025, 1 year ago.
What is the penalty if SDL Oxford 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 SDL Oxford 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.