- Company number
- 12941320
- Incorporated
- 9 Oct 20206 years trading
- Registered office
- 87 Millmead Business Centre,, Mill Mead Road, London, N17 9QU
- Nature of business
- Construction of domestic buildings; Electrical installation; Plumbing, heat and air-conditioning installation; Business and domestic software development
Cefex Group Ltd is a 6-year-old private limited company registered in London, company number 12941320, one of 12,075 building contractors in London. Its next accounts are due at Companies House on 30 June 2027, and the CT600 for the period to 30 September 2026 is due at HMRC on 30 September 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 £943 (+17.4%) on the year before, to -£4,471.
- Net assets rose in 2 of 4 year-on-year comparisons on record.
- Current assets of £11K against £20K owed within a year: 0.6 times cover.
- 1 employee on average, up from 0 the year before.
- 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 |
|---|---|---|---|---|---|
| 30 Sep 2025 | -£4,471 | £11K | £20K | 1 | |
| 30 Sep 2024 | -£5,414 | £2,550 | £13K | 0 | |
| 30 Sep 2023 | -£3,881 | £3,400 | £7,281 | 0 | |
| 30 Sep 2022 | -£4,764 | £7,537 | £12K | 0 | |
| 30 Sep 2021 | -£3,092 | £7,608 | £11K | 2 |
Where Cefex Group Ltd is registered
The registered office is in London (N17), in the Haringey local authority area, London. Show N17 9QU on a map.
Other trade companies in N17
- JKL Building & Maintenance LtdFinishing trades
- Vas-Vent LtdSpecialist contractors
- Zbrsons LtdMotor traders
- Bally 33 LtdBuilders
- Abcd Cleaning LtdCleaning companies
- Mie Cleaning Solutions LtdCleaning companies
- Worklane LtdRoofers
- Figzu LtdCleaning companies
Also registered at this address
3 other companies use the same registered office as Cefex Group Ltd.
- Claene Cleaning LtdCleaning companies
- Mas London Group LtdSpecialist contractors
- Recca UK Cars LtdMotor traders
What happens if Cefex Group 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 June 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jul 2027 to 31 Jul 2027 | £150 |
| 1 to 3 months late | 1 Aug 2027 to 30 Sep 2027 | £375 |
| 3 to 6 months late | 1 Oct 2027 to 31 Dec 2027 | £750 |
| More than 6 months late | From 1 Jan 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Oct 2027 | £200 |
| 3 months late | 30 Dec 2027 | another £200 |
| 6 months late | 30 Mar 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Sep 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
- 12941320
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 9 October 2020 (6 years ago)
- Registered office
- 87 Millmead Business Centre,, Mill Mead Road, London, N17 9QU
- Nature of business
- Construction of domestic buildings (SIC 41202)
Electrical installation (SIC 43210)
Plumbing, heat and air-conditioning installation (SIC 43220)
Business and domestic software development (SIC 62012) - Year end
- 30 September (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 September 2025
- Last confirmation statement
- 4 March 2026
- Previous names
- Design Si Solutions Ltd (until 16 Feb 2026)
Deal International Trading Ltd (until 6 Feb 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.
- Ceiling Systems Limited2012
- Ceka Development SPV Ltd2022
- Ceka Maintenance Ltd2023
- Celikpro Handyman Ltd2020
- Celtcon Limited2026
- Cem Cladding Ltd2026
- Cemal Invest Ltd2017
- Cemax Maintenance Limited2024
All building contractors in London · All trades in London · Builders across the UK
Frequently asked questions
When are Cefex Group Ltd's accounts due?
Cefex Group Ltd's next accounts are due at Companies House by 30 June 2027 (in 260 days), covering the period to 30 September 2026.
When is Cefex Group Ltd's CT600 due?
The CT600 for the period to 30 September 2026 is due at HMRC by 30 September 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 July 2027.
Is Cefex Group Ltd still trading?
Cefex Group 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 Cefex Group Ltd do?
Cefex Group Ltd is registered under Construction of domestic buildings (SIC 41202); Electrical installation (SIC 43210); Plumbing, heat and air-conditioning installation (SIC 43220); Business and domestic software development (SIC 62012).
How old is Cefex Group Ltd?
Cefex Group Ltd was incorporated on 9 October 2020, 6 years ago.
What is the penalty if Cefex Group 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 Cefex Group 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.