- Company number
- 12535679
- Incorporated
- 26 Mar 20206 years trading
- Registered office
- 17 Brookside, East Barnet, Barnet, EN4 8TT
- Nature of business
- Construction of commercial buildings; Construction of domestic buildings; Plumbing, heat and air-conditioning installation
MR Robert Plummer Ltd is a 6-year-old private limited company registered in Barnet, company number 12535679, one of 201 building contractors in Barnet. 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 unchanged on the year before, at £1.
- Net assets rose in 0 of 4 year-on-year comparisons on record.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 5 years, 2021 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | £1 | 0 | |||
| 31 Mar 2024 | £1 | 1 | |||
| 31 Mar 2023 | £1 | 0 | |||
| 31 Mar 2022 | £1 | 0 | |||
| 31 Mar 2021 | £1 | £0 | £0 | 0 |
Where MR Robert Plummer Ltd is registered
The registered office is in Barnet (EN4), in the Barnet local authority area, London. Show EN4 8TT on a map.
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Also registered at this address
1 other company uses the same registered office as MR Robert Plummer Ltd.
- Goodex LtdBuilders
What happens if MR Robert Plummer 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
- 12535679
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 26 March 2020 (6 years ago)
- Registered office
- 17 Brookside, East Barnet, Barnet, EN4 8TT
- Nature of business
- Construction of commercial buildings (SIC 41201)
Construction of domestic buildings (SIC 41202)
Plumbing, heat and air-conditioning installation (SIC 43220) - Year end
- 31 March (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 13 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 Barnet
Other active building contractors registered in Barnet.
- Munrose Property Development Limited2012
- N&S Building Services Limited2012
- Nakov Ltd2026
- NDR Construction Ltd2026
- New Sardinian Holidays Limited2012
- Niko Construction Ltd2022
- Novian Ltd2025
- Nugent Brothers Construction Limited1994
All building contractors in Barnet · All trades in Barnet · Builders across the UK
Frequently asked questions
When are MR Robert Plummer Ltd's accounts due?
MR Robert Plummer Ltd's next accounts are due at Companies House by 31 December 2026 (in 80 days), covering the period to 31 March 2026.
When is MR Robert Plummer 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 MR Robert Plummer Ltd still trading?
MR Robert Plummer 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 MR Robert Plummer Ltd do?
MR Robert Plummer Ltd is registered under Construction of commercial buildings (SIC 41201); Construction of domestic buildings (SIC 41202); Plumbing, heat and air-conditioning installation (SIC 43220).
How old is MR Robert Plummer Ltd?
MR Robert Plummer Ltd was incorporated on 26 March 2020, 6 years ago.
What is the penalty if MR Robert Plummer 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 MR Robert Plummer 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.