- Companies
- Specialist contractors
- Wantage
- Mario Plumbing Ltd
Mario Plumbing Ltd
- Company number
- 14406643
- Incorporated
- 9 Oct 20224 years trading
- Registered office
- 27 Stockham Way, Wantage, OX12 9BH
- Nature of business
- Other specialised construction activities n.e.c.
Mario Plumbing Ltd is a 4-year-old private limited company registered in Wantage, company number 14406643, one of 17 specialist construction companies in Wantage. Its next accounts are due at Companies House on 31 July 2027, and the CT600 for the period to 31 October 2026 is due at HMRC on 31 October 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 £886 (+2.4%) on the year before, to £38K.
- Current assets of £27K against £830 owed within a year: more than 10 times cover.
- 2 employees on average during the year.
- 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 Oct 2025 | £38K | £27K | £830 | 2 | |
| 31 Oct 2024 | £37K | £32K | £8,321 | 2 | |
| 31 Oct 2023 | £31K | £39K | £39K | £7,380 | 1 |
Where Mario Plumbing Ltd is registered
The registered office is in Wantage (OX12), in the Vale of White Horse local authority area, South East. Show OX12 9BH on a map.
Other trade companies in OX12
- Busby Heritage LtdProperty developers
- Alan Cleaning LtdCleaning companies
- Novus Tiling LimitedFloor and wall tilers
- Blu Subsea Diving Services UK LtdMachinery repair and installation
- Summit Scaffolding Services LtdScaffolders
- Posh Wash Didcot LtdCleaning companies
- HPLD LimitedLandscapers and gardeners
- 4Paws Grooming LtdCleaning companies
What happens if Mario Plumbing 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 July 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Aug 2027 to 31 Aug 2027 | £150 |
| 1 to 3 months late | 1 Sep 2027 to 31 Oct 2027 | £375 |
| 3 to 6 months late | 1 Nov 2027 to 31 Jan 2028 | £750 |
| More than 6 months late | From 1 Feb 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Nov 2027 | £200 |
| 3 months late | 31 Jan 2028 | another £200 |
| 6 months late | 30 Apr 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Oct 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
- 14406643
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 9 October 2022 (4 years ago)
- Registered office
- 27 Stockham Way, Wantage, OX12 9BH
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 31 October (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 October 2025
- Last confirmation statement
- 28 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 Wantage
Other active specialist construction companies registered in Wantage.
- P&M Cleaning Experts Ltd2025
- Parklane Driveways Ltd2009
- Quad Innovation and Environmental Ltd2014
- RJC Construction (Wantage) Ltd2018
- RP Structural & Co Ltd2023
- T & L Construction (Oxford) Limited2003
- Turnkey Fitout Specialist Ltd2021
- Veltrax Industrial Ltd2026
All specialist construction companies in Wantage · All trades in Wantage · Specialist contractors across the UK
Frequently asked questions
When are Mario Plumbing Ltd's accounts due?
Mario Plumbing Ltd's next accounts are due at Companies House by 31 July 2027 (in 291 days), covering the period to 31 October 2026.
When is Mario Plumbing Ltd's CT600 due?
The CT600 for the period to 31 October 2026 is due at HMRC by 31 October 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 August 2027.
Is Mario Plumbing Ltd still trading?
Mario Plumbing 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 Plumbing Ltd do?
Mario Plumbing Ltd is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Mario Plumbing Ltd?
Mario Plumbing Ltd was incorporated on 9 October 2022, 4 years ago.
What is the penalty if Mario Plumbing 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 Plumbing 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.