- Companies
- Specialist contractors
- Woodstock
- Blenheim Supporting Limited
Blenheim Supporting Limited
- Company number
- 07446734
- Incorporated
- 22 Nov 201015 years trading
- Registered office
- The Estate Office, Blenheim Palace, Woodstock, Oxfordshire, OX20 1PP
- Nature of business
- Other specialised construction activities n.e.c.
Blenheim Supporting Limited is a 15-year-old private limited company registered in Woodstock, company number 07446734, one of the UK's specialist construction companies. Its next accounts are due at Companies House on 31 December 2026, and the CT600 for the period to 31 March 2026 is due at HMRC on 31 March 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Finances
From each year's balance sheet filed at Companies House. Small companies do not have to publish turnover or profit, so these are balance sheet figures.
- Net assets up £1.3M on the year before, to £1.3M.
- Net assets rose in 1 of 4 year-on-year comparisons on record.
- Current assets of £2.6M against £1.3M owed within a year: 2.0 times cover.
- Balance sheets on record for 5 years, 2015 to 2019.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2019 | £1.3M | £268K | £2.6M | £1.3M | |
| 31 Mar 2018 | £1 | £138K | £138K | ||
| 31 Mar 2017 | £1 | £15K | £15K | ||
| 31 Mar 2016 | £1 | £1 | |||
| 31 Mar 2015 | £1 | £1 |
Where Blenheim Supporting Limited is registered
The registered office is in Woodstock (OX20), in the West Oxfordshire local authority area, South East. Show OX20 1PP on a map.
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What happens if Blenheim Supporting 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 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- 07446734
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 22 November 2010 (15 years ago)
- Registered office
- The Estate Office, Blenheim Palace, Woodstock, Oxfordshire, OX20 1PP
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 22 November 2025
Filing notes for specialist construction companies
Specialist contractors often work under CIS for main contractors. Retentions held back by the customer still count towards turnover once the work is done.
Similar companies in Woodstock
Other active specialist construction companies registered in Woodstock.
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Frequently asked questions
When are Blenheim Supporting Limited's accounts due?
Blenheim Supporting Limited's next accounts are due at Companies House by 31 December 2026 (in 79 days), covering the period to 31 March 2026.
When is Blenheim Supporting Limited's CT600 due?
The CT600 for the period to 31 March 2026 is due at HMRC by 31 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2027.
Is Blenheim Supporting Limited still trading?
Blenheim Supporting 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 Blenheim Supporting Limited do?
Blenheim Supporting Limited is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Blenheim Supporting Limited?
Blenheim Supporting Limited was incorporated on 22 November 2010, 15 years ago.
What is the penalty if Blenheim Supporting 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 Blenheim Supporting 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.