- Companies
- Plumbers and heating engineers
- London
- Reliance Building & Construction Ltd
Reliance Building & Construction Ltd
- Company number
- 11828955
- Incorporated
- 15 Feb 20197 years trading
- Registered office
- 16A Messina Avenue, London, NW6 4LD
- Nature of business
- Plumbing, heat and air-conditioning installation; Other construction installation; Plastering; Painting
Reliance Building & Construction Ltd is a 7-year-old private limited company registered in London, company number 11828955, one of 2,972 plumbing and heating companies in London. Its next accounts are due at Companies House on 30 April 2027, and the CT600 for the period to 31 July 2026 is due at HMRC on 31 July 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 £609 (+240.7%) on the year before, to £862.
- Net assets rose in 3 of 5 year-on-year comparisons on record.
- Current assets of £106K against £134K owed within a year: 0.8 times cover.
- 5 employees on average, down from 6 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 Jul 2025 | £862 | £106K | £134K | 5 | |
| 29 Feb 2024 | £253 | £34K | £49K | 6 | |
| 28 Feb 2023 | £1,255 | £44K | £57K | 4 | |
| 28 Feb 2022 | £21K | £47K | £41K | 4 | |
| 28 Feb 2021 | £805 | £63K | £27K | 4 | |
| 28 Feb 2020 | £593 | £21K | £33K | 6 |
Where Reliance Building & Construction Ltd is registered
The registered office is in London (NW6), in the Camden local authority area, London. Show NW6 4LD on a map.
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What happens if Reliance Building & Construction 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 April 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 May 2027 to 31 May 2027 | £150 |
| 1 to 3 months late | 1 Jun 2027 to 31 Jul 2027 | £375 |
| 3 to 6 months late | 1 Aug 2027 to 31 Oct 2027 | £750 |
| More than 6 months late | From 1 Nov 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Aug 2027 | £200 |
| 3 months late | 31 Oct 2027 | another £200 |
| 6 months late | 31 Jan 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jul 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
- 11828955
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 15 February 2019 (7 years ago)
- Registered office
- 16A Messina Avenue, London, NW6 4LD
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
Other construction installation (SIC 43290)
Plastering (SIC 43310)
Painting (SIC 43341) - Year end
- 31 July (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 July 2025
- Last confirmation statement
- 28 February 2026
Filing notes for plumbing and heating companies
Plumbing and heating companies frequently work under CIS for main contractors and also directly for homeowners, so turnover can mix CIS and non-CIS income.
Similar companies in London
Other active plumbing and heating companies registered in London.
- Reliance HVAC Services Ltd2019
- Renewable Advancements Limited2020
- Renovare Renewables Ltd2026
- Renzy Ltd2025
- Repair 365 Ltd2025
- Replacement Spares Direct Limited2012
- Reprox Plumbing & Heating Limited2022
- Reshcastle Zero Ltd2025
All plumbing and heating companies in London · All trades in London · Plumbers and heating engineers across the UK
Frequently asked questions
When are Reliance Building & Construction Ltd's accounts due?
Reliance Building & Construction Ltd's next accounts are due at Companies House by 30 April 2027 (in 199 days), covering the period to 31 July 2026.
When is Reliance Building & Construction Ltd's CT600 due?
The CT600 for the period to 31 July 2026 is due at HMRC by 31 July 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 May 2027.
Is Reliance Building & Construction Ltd still trading?
Reliance Building & Construction 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 Reliance Building & Construction Ltd do?
Reliance Building & Construction Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220); Other construction installation (SIC 43290); Plastering (SIC 43310); Painting (SIC 43341).
How old is Reliance Building & Construction Ltd?
Reliance Building & Construction Ltd was incorporated on 15 February 2019, 7 years ago.
What is the penalty if Reliance Building & Construction 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 Reliance Building & Construction 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.