- Companies
- Finishing trades
- Harrow
- Master Plumbing Service Ltd
Master Plumbing Service Ltd
- Company number
- 12080990
- Incorporated
- 2 Jul 20197 years trading
- Registered office
- 38 Harley Crescent, Harrow, HA1 4XJ
- Nature of business
- Other building completion and finishing
Master Plumbing Service Ltd is a 7-year-old private limited company registered in Harrow, company number 12080990, one of 251 building finishing companies in Harrow. 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 £12K on the year before, to £13K.
- Net assets rose in 4 of 5 year-on-year comparisons on record.
- Current assets of £66K against £70K owed within a year: 0.9 times cover.
- 1 employee on average, down from 2 the year before.
- Balance sheets on record for 6 years, 2020 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | £13K | £39K | £66K | £70K | 1 |
| 31 Mar 2024 | £586 | £30K | 2 | ||
| 31 Mar 2023 | £179 | £24K | 2 | ||
| 31 Mar 2022 | -£6,083 | £12K | 2 | ||
| 31 Mar 2021 | £196 | £10K | 1 | ||
| 31 Jul 2020 | £1 |
Where Master Plumbing Service Ltd is registered
The registered office is in Harrow (HA1), in the Harrow local authority area, London. Show HA1 4XJ on a map.
Other trade companies in HA1
- Cabos Electrical LimitedElectricians
- Mia Maria Services LtdCleaning companies
- Ac Operations LtdScaffolders
- Verde Masters LtdLandscapers and gardeners
- Omega Works Group LtdLandscapers and gardeners
- Call 'Em LimitedPlumbers and heating engineers
- Swan Roofing Services LimitedRoofers
- DRV Property Solutions LtdPainters and decorators
What happens if Master Plumbing Service 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
- 12080990
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 2 July 2019 (7 years ago)
- Registered office
- 38 Harley Crescent, Harrow, HA1 4XJ
- Nature of business
- Other building completion and finishing (SIC 43390)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 1 July 2026
Filing notes for building finishing companies
Finishing trade companies cover a wide range of work. Most are micro-entities with simple accounts and a straightforward CT600.
Similar companies in Harrow
Other active building finishing companies registered in Harrow.
- Mature Services & Maintenance Ltd2010
- Mayfair Builders Ltd2018
- MCH Construction Ltd2016
- MG Construction Builder Services Ltd2026
- Middlesex Loft & Construction Limited2018
- Miguelito Construct Ltd2018
- Mirauta Ltd2011
- Mis Plastering Ltd2017
All building finishing companies in Harrow · All trades in Harrow · Finishing trades across the UK
Frequently asked questions
When are Master Plumbing Service Ltd's accounts due?
Master Plumbing Service 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 Master Plumbing Service 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 Master Plumbing Service Ltd still trading?
Master Plumbing Service 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 Master Plumbing Service Ltd do?
Master Plumbing Service Ltd is registered under Other building completion and finishing (SIC 43390).
How old is Master Plumbing Service Ltd?
Master Plumbing Service Ltd was incorporated on 2 July 2019, 7 years ago.
What is the penalty if Master Plumbing Service 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 Master Plumbing Service 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.