- Companies
- Electricians
- London
- Tetra Building Contractors Ltd
Tetra Building Contractors Ltd
- Company number
- 11513127
- Incorporated
- 13 Aug 20188 years trading
- Registered office
- 74A High Street Wanstead, London, E11 2RJ
- Nature of business
- Electrical installation; Other specialised construction activities n.e.c.; Retail sale of electrical household appliances in specialised stores
Tetra Building Contractors Ltd is a 8-year-old private limited company registered in London, company number 11513127, one of 3,448 electrical contractors in London. Its next accounts are due at Companies House on 31 May 2027, and the CT600 for the period to 31 August 2026 is due at HMRC on 31 August 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 down £7,377 (-35.7%) on the year before, to £13K.
- Net assets rose in 5 of 6 year-on-year comparisons on record.
- Current assets of £39K against £46K owed within a year: 0.8 times cover.
- 5 employees on average, up from 4 the year before.
- Balance sheets on record for 7 years, 2019 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Aug 2025 | £13K | £4,701 | £39K | £46K | 5 |
| 31 Aug 2024 | £21K | £80K | £119K | £113K | 4 |
| 31 Aug 2023 | £17K | £99K | £92K | 4 | |
| 31 Aug 2022 | £16K | £85K | £75K | 4 | |
| 31 Aug 2021 | £7,824 | £63K | £60K | 7 | |
| 31 Aug 2020 | £6,811 | £19K | £90K | 8 | |
| 31 Aug 2019 | £100 | £100 |
Who runs and owns Tetra Building Contractors Ltd
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officers (2)
| Name | Role | Appointed |
|---|---|---|
| H*** M*** | Director | Aug 2018 |
| H*** M*** | Secretary | Nov 2023 |
1 former officer
| Name | Role | Appointed | Left |
|---|---|---|---|
| D*** R*** | Director | Aug 2018 | Mar 2021 |
Person with significant control
Where Tetra Building Contractors Ltd is registered
The registered office is in London (E11), in the Redbridge local authority area, London. Show E11 2RJ on a map.
Other trade companies in E11
- Yvt 79 LtdBuilders
- Ayadi Services LimitedPlumbers and heating engineers
- Bensliman Services LimitedPlumbers and heating engineers
- Myhomerenew Ltd LtdPlasterers
- Velaron LtdProperty developers
- Hakk Technical Services LtdInstallers
- Meycarwash LtdCleaning companies
- Rose Ave LtdProperty developers
Also registered at this address
12 other companies use the same registered office as Tetra Building Contractors Ltd.
- Aspects of Glass and Mirrors LimitedGlaziers
- Blackmur Flooring LimitedProperty developers
- Erect Design and Build LtdSpecialist contractors
- HB Property and Maintenance LtdProperty developers
- Henbendan Cleaning Services LimitedCleaning companies
- K&M Electrical Maintenance LtdElectricians
- Omfc LimitedBuilders
- Ozdemir Deco LtdPainters and decorators
- Rose Ave LtdProperty developers
- Sitoro LtdProperty developers
- Sound Proof Glazing LimitedGlaziers
- Tetra Engineering Contractors LtdElectricians
What happens if Tetra Building Contractors 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 May 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jun 2027 to 30 Jun 2027 | £150 |
| 1 to 3 months late | 1 Jul 2027 to 31 Aug 2027 | £375 |
| 3 to 6 months late | 1 Sep 2027 to 30 Nov 2027 | £750 |
| More than 6 months late | From 1 Dec 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Sep 2027 | £200 |
| 3 months late | 30 Nov 2027 | another £200 |
| 6 months late | 29 Feb 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Aug 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
- 11513127
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 13 August 2018 (8 years ago)
- Registered office
- 74A High Street Wanstead, London, E11 2RJ
- Nature of business
- Electrical installation (SIC 43210)
Other specialised construction activities n.e.c. (SIC 43999)
Retail sale of electrical household appliances in specialised stores (SIC 47540) - Year end
- 31 August (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 August 2025
- Last confirmation statement
- 19 February 2026
- Previous names
- Tetra Engineering Contractors Ltd (until 4 Oct 2019)
Tetra Electrical and Mechanical Ltd (until 17 Apr 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.
- Tetra Electrical Ltd2023
- Tetra Engineering Contractors Ltd2019
- Tew Power Engineering Limited2025
- TH Electrics Ltd2026
- TH.Es Enterprises Ltd2013
- Thames Glow Limited2015
- Thames Spark Renewables Ltd2022
- THB Works Limited2025
All electrical contractors in London · All trades in London · Electricians across the UK
Frequently asked questions
When are Tetra Building Contractors Ltd's accounts due?
Tetra Building Contractors Ltd's next accounts are due at Companies House by 31 May 2027 (in 230 days), covering the period to 31 August 2026.
When is Tetra Building Contractors Ltd's CT600 due?
The CT600 for the period to 31 August 2026 is due at HMRC by 31 August 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 June 2027.
Is Tetra Building Contractors Ltd still trading?
Tetra Building Contractors 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 Tetra Building Contractors Ltd do?
Tetra Building Contractors Ltd is registered under Electrical installation (SIC 43210); Other specialised construction activities n.e.c. (SIC 43999); Retail sale of electrical household appliances in specialised stores (SIC 47540).
How old is Tetra Building Contractors Ltd?
Tetra Building Contractors Ltd was incorporated on 13 August 2018, 8 years ago.
Who runs Tetra Building Contractors Ltd?
Tetra Building Contractors Ltd has 1 active director, the longest-serving appointed in Aug 2018. Their names and service addresses are on the Companies House register.
Who owns Tetra Building Contractors Ltd?
One person or company has significant control of Tetra Building Contractors Ltd: an individual (owns 75% or more of the shares).
What is the penalty if Tetra Building Contractors 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 Tetra Building Contractors 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.