- Company number
- 14656173
- Incorporated
- 11 Feb 20233 years trading
- Registered office
- 13 Amberley Grove, London, SE26 6DG
- Nature of business
- Construction of domestic buildings; Plumbing, heat and air-conditioning installation
Plumb Masters London Ltd is a 3-year-old private limited company registered in London, company number 14656173, one of 12,075 building contractors in London. Its next accounts are due at Companies House on 30 November 2026, and the CT600 for the period to 28 February 2026 is due at HMRC on 28 February 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Where Plumb Masters London Ltd is registered
The registered office is in London (SE26), in the Lewisham local authority area, London. Show SE26 6DG on a map.
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What happens if Plumb Masters London 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 November 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Dec 2026 to 31 Dec 2026 | £150 |
| 1 to 3 months late | 1 Jan 2027 to 28 Feb 2027 | £375 |
| 3 to 6 months late | 1 Mar 2027 to 31 May 2027 | £750 |
| More than 6 months late | From 1 Jun 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Mar 2027 | £200 |
| 3 months late | 28 May 2027 | another £200 |
| 6 months late | 28 Aug 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 28 Feb 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
- 14656173
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 11 February 2023 (3 years ago)
- Registered office
- 13 Amberley Grove, London, SE26 6DG
- Nature of business
- Construction of domestic buildings (SIC 41202)
Plumbing, heat and air-conditioning installation (SIC 43220) - Year end
- 28 February (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 28 February 2025
- Last confirmation statement
- 4 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 London
Other active building contractors registered in London.
- Plumbing &Electric Ltd2025
- Plume Renovations Limited2016
- Plumstead Plumbers Ltd2023
- Pluto Gas Ltd2024
- Plymouth Construction Services Ltd2026
- PM Complete Builders Ltd2020
- PM Interiors Ltd2014
- PM Modern Constructions Ltd2025
All building contractors in London · All trades in London · Builders across the UK
Frequently asked questions
When are Plumb Masters London Ltd's accounts due?
Plumb Masters London Ltd's next accounts are due at Companies House by 30 November 2026 (in 48 days), covering the period to 28 February 2026.
When is Plumb Masters London Ltd's CT600 due?
The CT600 for the period to 28 February 2026 is due at HMRC by 28 February 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 December 2026.
Is Plumb Masters London Ltd still trading?
Plumb Masters London 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 Plumb Masters London Ltd do?
Plumb Masters London Ltd is registered under Construction of domestic buildings (SIC 41202); Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Plumb Masters London Ltd?
Plumb Masters London Ltd was incorporated on 11 February 2023, 3 years ago.
What is the penalty if Plumb Masters London 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 Plumb Masters London 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.