- Companies
- Electricians
- London
- Relianze Engineering Ltd.
Relianze Engineering Ltd.
- Company number
- 12321076
- Incorporated
- 19 Nov 20196 years trading
- Registered office
- 54 Plumstead High Street, London, SE18 1SL
- Nature of business
- Electrical installation; Other engineering activities
Relianze Engineering Ltd. is a 6-year-old private limited company registered in London, company number 12321076, one of 3,448 electrical contractors in London. Its next accounts are due at Companies House on 31 August 2027, and the CT600 for the period to 30 November 2026 is due at HMRC on 30 November 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 £74 (+8.3%) on the year before, to £961.
- Net assets rose in 3 of 5 year-on-year comparisons on record.
- Current assets of £754 against £1,716 owed within a year: 0.4 times cover.
- 3 employees on average during the year.
- 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 |
|---|---|---|---|---|---|
| 30 Nov 2025 | £961 | £754 | £1,716 | 3 | |
| 30 Nov 2024 | £887 | £898 | £1,786 | 3 | |
| 30 Nov 2023 | £576 | £437 | £1,014 | 2 | |
| 30 Nov 2022 | £1,383 | £1,458 | £76 | 3 | |
| 30 Nov 2021 | £1,057 | £1,837 | £781 | 4 | |
| 30 Nov 2020 | £1,671 | £2,360 | £690 | 2 |
Where Relianze Engineering Ltd. is registered
The registered office is in London (SE18), in the Greenwich local authority area, London. Show SE18 1SL on a map.
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Also registered at this address
7 other companies use the same registered office as Relianze Engineering Ltd..
- Aba Cleaning Services LtdCleaning companies
- Am Home & Office Cleaning LtdCleaning companies
- Better View Glazing LimitedGlaziers
- Dream Properties LimitedProperty developers
- Gino Construction LimitedBuilders
- GN Construction and Adviser LtdBuilders
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What happens if Relianze Engineering 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 August 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Sep 2027 to 30 Sep 2027 | £150 |
| 1 to 3 months late | 1 Oct 2027 to 30 Nov 2027 | £375 |
| 3 to 6 months late | 1 Dec 2027 to 29 Feb 2028 | £750 |
| More than 6 months late | From 1 Mar 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Dec 2027 | £200 |
| 3 months late | 29 Feb 2028 | another £200 |
| 6 months late | 30 May 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Nov 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
- 12321076
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 19 November 2019 (6 years ago)
- Registered office
- 54 Plumstead High Street, London, SE18 1SL
- Nature of business
- Electrical installation (SIC 43210)
Other engineering activities (SIC 71129) - Year end
- 30 November (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 November 2025
- Last confirmation statement
- 18 November 2025
- Previous names
- Air Con Dance Limited (until 11 Dec 2019)
Filing notes for electrical contractors
Electrical contracting companies are often a director plus a van and tools. Most fall within the micro-entity rules, so the accounts filed at Companies House are short, and the CT600 carries the tax detail.
Similar companies in London
Other active electrical contractors registered in London.
- Relight Electrical Ltd2026
- Remon Maintenance Group Ltd2026
- Remp Energy Solution Limited2023
- Renato Enzo Building Services Limited2005
- Renewa Volt Limited2024
- Renewable Es Ltd2026
- Renora Limited2016
- Renovatech Ltd2026
All electrical contractors in London · All trades in London · Electricians across the UK
Frequently asked questions
When are Relianze Engineering Ltd.'s accounts due?
Relianze Engineering Ltd.'s next accounts are due at Companies House by 31 August 2027 (in 323 days), covering the period to 30 November 2026.
When is Relianze Engineering Ltd.'s CT600 due?
The CT600 for the period to 30 November 2026 is due at HMRC by 30 November 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 September 2027.
Is Relianze Engineering Ltd. still trading?
Relianze Engineering 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 Relianze Engineering Ltd. do?
Relianze Engineering Ltd. is registered under Electrical installation (SIC 43210); Other engineering activities (SIC 71129).
How old is Relianze Engineering Ltd.?
Relianze Engineering Ltd. was incorporated on 19 November 2019, 6 years ago.
What is the penalty if Relianze Engineering 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 Relianze Engineering 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.