- Companies
- Installers
- London
- Mario and Daughters Ltd
Mario and Daughters Ltd
- Company number
- 11706648
- Incorporated
- 1 Dec 20187 years trading
- Registered office
- 167-169 Great Portland Street, London, W1W 5PF
- Nature of business
- Other construction installation
Mario and Daughters Ltd is a 7-year-old private limited company registered in London, company number 11706648, one of 2,278 installation companies (insulation, lifts, shutters and similar) in London. Its next accounts are due at Companies House on 30 September 2027, and the CT600 for the period to 31 December 2026 is due at HMRC on 31 December 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 £2,571 (-4.3%) on the year before, to -£62K.
- Net assets rose in 0 of 6 year-on-year comparisons on record.
- 1 employee on average during the year.
- Balance sheets on record for 7 years, 2019 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Dec 2025 | -£62K | £37K | 1 | ||
| 31 Dec 2024 | -£60K | £35K | 1 | ||
| 31 Dec 2023 | -£58K | £33K | 1 | ||
| 31 Dec 2022 | -£55K | £30K | 1 | ||
| 31 Dec 2021 | -£49K | £24K | 1 | ||
| 31 Dec 2020 | -£48K | £23K | 1 | ||
| 31 Dec 2019 | -£3,588 | £3,588 | 1 |
Where Mario and Daughters Ltd is registered
The registered office is in London (W1W), in the Westminster local authority area, London. Show W1W 5PF on a map.
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- Holly’S Housekeeping LtdCleaning companies
Shared registered office
1,494 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 Mario and Daughters 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 30 September 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Oct 2027 to 31 Oct 2027 | £150 |
| 1 to 3 months late | 1 Nov 2027 to 31 Dec 2027 | £375 |
| 3 to 6 months late | 1 Jan 2028 to 31 Mar 2028 | £750 |
| More than 6 months late | From 1 Apr 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jan 2028 | £200 |
| 3 months late | 31 Mar 2028 | another £200 |
| 6 months late | 30 Jun 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Dec 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
- 11706648
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 1 December 2018 (7 years ago)
- Registered office
- 167-169 Great Portland Street, London, W1W 5PF
- Nature of business
- Other construction installation (SIC 43290)
- Year end
- 31 December (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 December 2025
- Last confirmation statement
- 14 November 2025
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 London
Other active installation companies (insulation, lifts, shutters and similar) registered in London.
- Marl Construction Limited2022
- Marlin Kitchens Ltd2023
- Marsden Property Solutions Ltd2025
- Martin Buendia Ltd2025
- Martinez & Sons Building Maintenance Limited2007
- Martins Blinds Ltd2018
- Marvel Group Limited2016
- Marylebone Building & Maintenance Ltd2026
All installation companies (insulation, lifts, shutters and similar) in London · All trades in London · Installers across the UK
Frequently asked questions
When are Mario and Daughters Ltd's accounts due?
Mario and Daughters Ltd's next accounts are due at Companies House by 30 September 2027 (in 352 days), covering the period to 31 December 2026.
When is Mario and Daughters Ltd's CT600 due?
The CT600 for the period to 31 December 2026 is due at HMRC by 31 December 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 October 2027.
Is Mario and Daughters Ltd still trading?
Mario and Daughters 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 Mario and Daughters Ltd do?
Mario and Daughters Ltd is registered under Other construction installation (SIC 43290).
How old is Mario and Daughters Ltd?
Mario and Daughters Ltd was incorporated on 1 December 2018, 7 years ago.
What is the penalty if Mario and Daughters 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 Mario and Daughters 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.