- Company number
- 10995442
- Incorporated
- 4 Oct 20179 years trading
- Registered office
- Flat B, 1-3 Grantbridge Street, London, N1 8JL
- Nature of business
- Construction of domestic buildings
Az Plumbing Contractors Limited is a 9-year-old private limited company registered in London, company number 10995442, one of 12,075 building contractors in London. Its next accounts are due at Companies House on 31 December 2027, and the CT600 for the period to 31 March 2027 is due at HMRC on 31 March 2028.
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 £3,902 (+277.7%) on the year before, to £5,307.
- Net assets rose in 5 of 7 year-on-year comparisons on record.
- Current assets of £13K against £8,416 owed within a year: 1.6 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 8 years, 2019 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2026 | £5,307 | £13K | £8,416 | 2 | |
| 31 Mar 2025 | £1,405 | £4,981 | £11K | £4,848 | 2 |
| 31 Mar 2024 | -£4,720 | £8,709 | £15K | £6,698 | 1 |
| 31 Mar 2023 | -£7,903 | £8,950 | £19K | £9,297 | 1 |
| 31 Mar 2022 | -£12K | £6,629 | £14K | £8,623 | 2 |
| 31 Mar 2021 | -£2,084 | £13K | £16K | £4,259 | 1 |
| 31 Mar 2020 | £4,039 | £8,464 | £35K | 1 | |
| 31 Mar 2019 | £1,653 | £8,597 | £16K |
Who runs and owns Az Plumbing Contractors Limited
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officer
| Name | Role | Appointed |
|---|---|---|
| A*** Z*** | Director | Oct 2017 |
Person with significant control
Where Az Plumbing Contractors Limited is registered
The registered office is in London (N1), in the Islington local authority area, London. Show N1 8JL on a map.
Other trade companies in N1
- Tagwise LtdSpecialist contractors
- Sphere Aviation Solutions UK LtdMachinery repair and installation
- Get IT Done Builders LtdJoiners and carpenters
- Evolution Products LimitedMotor traders
- Fleetstone Trading LtdMotor traders
- Kenneth Brady LtdElectricians
- UK Import Export LtdBuilders
- Magic Door Services LimitedMachinery repair and installation
What happens if Az Plumbing Contractors Limited 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 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2028 to 31 Jan 2028 | £150 |
| 1 to 3 months late | 1 Feb 2028 to 31 Mar 2028 | £375 |
| 3 to 6 months late | 1 Apr 2028 to 30 Jun 2028 | £750 |
| More than 6 months late | From 1 Jul 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2028 | £200 |
| 3 months late | 30 Jun 2028 | another £200 |
| 6 months late | 30 Sep 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 2029 | 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
- 10995442
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 4 October 2017 (9 years ago)
- Registered office
- Flat B, 1-3 Grantbridge Street, London, N1 8JL
- Nature of business
- Construction of domestic buildings (SIC 41202)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 March 2026
- Last confirmation statement
- 3 October 2025
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.
- Azad Building Ltd2020
- Azar Construction Ltd2026
- Azbi Smartbuild Ltd2026
- Aze Group Ltd2025
- Azi Builders Ltd2026
- Azi Building UK Limited2024
- Azizi Energy Ltd2025
- Azr Build Limited2025
All building contractors in London · All trades in London · Builders across the UK
Frequently asked questions
When are Az Plumbing Contractors Limited's accounts due?
Az Plumbing Contractors Limited's next accounts are due at Companies House by 31 December 2027 (in 444 days), covering the period to 31 March 2027.
When is Az Plumbing Contractors Limited's CT600 due?
The CT600 for the period to 31 March 2027 is due at HMRC by 31 March 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2028.
Is Az Plumbing Contractors Limited still trading?
Az Plumbing Contractors Limited 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 Az Plumbing Contractors Limited do?
Az Plumbing Contractors Limited is registered under Construction of domestic buildings (SIC 41202).
How old is Az Plumbing Contractors Limited?
Az Plumbing Contractors Limited was incorporated on 4 October 2017, 9 years ago.
Who runs Az Plumbing Contractors Limited?
Az Plumbing Contractors Limited has 1 active director, the longest-serving appointed in Oct 2017. Their names and service addresses are on the Companies House register.
Who owns Az Plumbing Contractors Limited?
One person or company has significant control of Az Plumbing Contractors Limited: an individual (owns 75% or more of the shares).
What is the penalty if Az Plumbing Contractors Limited 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 Az Plumbing Contractors Limited 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.