- Companies
- Builders
- Portsmouth
- BMC Loft Conversions Ltd
BMC Loft Conversions Ltd
- Company number
- 13911240
- Incorporated
- 11 Feb 20224 years trading
- Registered office
- Unit 9 Hilsea Industrial Estate, Limberline Spur, Portsmouth, PO3 5JW
- Nature of business
- Construction of domestic buildings
BMC Loft Conversions Ltd is a 4-year-old private limited company registered in Portsmouth, company number 13911240, one of 175 building contractors in Portsmouth. 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 down £2,119 (-96.8%) on the year before, to £71.
- Current assets of £177K against £189K owed within a year: 0.9 times cover.
- 4 employees on average, up from 3 the year before.
- Balance sheets on record for 3 years, 2023 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | £71 | £38K | £177K | £189K | 4 |
| 29 Feb 2024 | £2,190 | £106K | £99K | 3 | |
| 28 Feb 2023 | £25K | £179K | £167K | 1 |
Where BMC Loft Conversions Ltd is registered
The registered office is in Portsmouth (PO3), in the Portsmouth local authority area, South East. Show PO3 5JW on a map.
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What happens if BMC Loft Conversions 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 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
- 13911240
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 11 February 2022 (4 years ago)
- Registered office
- Unit 9 Hilsea Industrial Estate, Limberline Spur, Portsmouth, PO3 5JW
- Nature of business
- Construction of domestic buildings (SIC 41202)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 10 February 2026
Filing notes for building contractors
Building companies often run the Construction Industry Scheme as a contractor, a subcontractor or both. CIS deductions suffered during the year are set against the PAYE bill, and any unrecovered balance at the year end matters when the accounts are drawn up.
Similar companies in Portsmouth
Other active building contractors registered in Portsmouth.
- BP Masonry Ltd2024
- Building Works Matters Ltd2024
- C Hughes Brickwork and Construction Ltd2022
- C.D.M Contractors Ltd2008
- C45 Commercial Properties Limited2024
- Casa 4 Developments Ltd2025
- Chalkstone Projects Ltd2026
- Clameg Design and Build Ltd2010
All building contractors in Portsmouth · All trades in Portsmouth · Builders across the UK
Frequently asked questions
When are BMC Loft Conversions Ltd's accounts due?
BMC Loft Conversions Ltd's next accounts are due at Companies House by 31 December 2026 (in 79 days), covering the period to 31 March 2026.
When is BMC Loft Conversions Ltd'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 BMC Loft Conversions Ltd still trading?
BMC Loft Conversions 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 BMC Loft Conversions Ltd do?
BMC Loft Conversions Ltd is registered under Construction of domestic buildings (SIC 41202).
How old is BMC Loft Conversions Ltd?
BMC Loft Conversions Ltd was incorporated on 11 February 2022, 4 years ago.
What is the penalty if BMC Loft Conversions 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 BMC Loft Conversions 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.