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- Blenheim Builders Limited
Company profile · Specialist contractors
Blenheim Builders Limited
Blenheim Builders Limited is a 10-year-old private limited company registered in Portsmouth, company number 10069550, one of 193 specialist construction companies in Portsmouth. Its next accounts are due at Companies House on 31 January 2028, and the CT600 for the period to 30 April 2027 is due at HMRC on 30 April 2028.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Financial snapshot, 2026
From the balance sheet at 30 April 2026, as filed at Companies House.
Blenheim Builders Limited over the years
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 £16K (+16.9%) on the year before, to £110K.
- Net assets rose in 7 of 9 year-on-year comparisons on record.
- Current assets of £138K against £49K owed within a year: 2.8 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 10 years, 2017 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Apr 2026 | £110K | £138K | £49K | 2 | |
| 30 Apr 2025 | £94K | £134K | £47K | 2 | |
| 30 Apr 2024 | £83K | £113K | £39K | 2 | |
| 30 Apr 2023 | £71K | £86K | £27K | 2 | |
| 30 Apr 2022 | £63K | £78K | £30K | 2 | |
| 30 Apr 2021 | £29K | £54K | £29K | 2 | |
| 30 Apr 2020 | £14K | £47K | £39K | 2 | |
| 31 Mar 2019 | £2 | ||||
| 31 Mar 2018 | £2 | ||||
| 31 Mar 2017 | £2 |
Where Blenheim Builders Limited is registered
The registered office is in Portsmouth (PO6), in the Portsmouth local authority area, South East. Show PO6 3EB on a map.
Other trade companies in PO6
- Bellagio Partners LtdBuilders
- Cpenw LtdMachinery repair and installation
- Marla Brickwork & Construction LtdProperty developers
- Miracles in Metal LtdMechanics and garages
- FH Fire & Electrical LtdElectricians
- Thomcore LimitedSpecialist contractors
- JMS Southern LtdElectricians
- The Motum Group LtdSpecialist contractors
Shared registered office
142 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 Blenheim Builders 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 January 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Feb 2028 to 29 Feb 2028 | £150 |
| 1 to 3 months late | 1 Mar 2028 to 30 Apr 2028 | £375 |
| 3 to 6 months late | 1 May 2028 to 31 Jul 2028 | £750 |
| More than 6 months late | From 1 Aug 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 May 2028 | £200 |
| 3 months late | 30 Jul 2028 | another £200 |
| 6 months late | 30 Oct 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Apr 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
- 10069550
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 17 March 2016 (10 years ago)
- Registered office
- 8 Spur Road, Cosham, Portsmouth, PO6 3EB
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 30 April (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 April 2026
- Last confirmation statement
- 16 May 2026
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 Portsmouth
Other active specialist construction companies registered in Portsmouth.
- Brian Mabe Fire Protection Ltd2016
- Bricktex Southern Limited2022
- C Conway Groundworks Ltd2024
- C Kelly Brickwork Services Limited2006
- C45 Limited2017
- Calidad Installations Ltd2013
- Cardinal Integrated Services Ltd2023
- Cavenpark Ltd2012
All specialist construction companies in Portsmouth · All trades in Portsmouth · Specialist contractors across the UK
Frequently asked questions
When are Blenheim Builders Limited's accounts due?
Blenheim Builders Limited's next accounts are due at Companies House by 31 January 2028 (in 476 days), covering the period to 30 April 2027.
When is Blenheim Builders Limited's CT600 due?
The CT600 for the period to 30 April 2027 is due at HMRC by 30 April 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 February 2028.
Is Blenheim Builders Limited still trading?
Blenheim Builders 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 Builders Limited do?
Blenheim Builders Limited is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Blenheim Builders Limited?
Blenheim Builders Limited was incorporated on 17 March 2016, 10 years ago.
What is the penalty if Blenheim Builders 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 Builders 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.