- Company number
- 12813394
- Incorporated
- 14 Aug 20206 years trading
- Registered office
- 76 Blunden Drive, Slough, SL3 8WQ
- Nature of business
- Construction of domestic buildings; Demolition; Electrical installation; Painting
Cosmin and Partener Ltd is a 6-year-old private limited company registered in Slough, company number 12813394, one of 683 building contractors in Slough. 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 up £8,875 (+306.8%) on the year before, to £12K.
- Net assets rose in 2 of 4 year-on-year comparisons on record.
- Current assets of £12K against £2,387 owed within a year: 5.0 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- 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 |
|---|---|---|---|---|---|
| 31 Aug 2025 | £12K | £12K | £2,387 | 0 | |
| 31 Aug 2024 | £2,893 | £4,646 | £1,749 | 0 | |
| 30 Aug 2023 | £1 | £1 | |||
| 30 Aug 2022 | £1 | £1 | |||
| 30 Aug 2021 | £100 | £100 | 1 |
Where Cosmin and Partener Ltd is registered
The registered office is in Slough (SL3), in the Slough local authority area, South East. Show SL3 8WQ on a map.
Other trade companies in SL3
- Tac Design & Build LtdFinishing trades
- G&S Formwork LtdBuilders
- Klenzo LtdCleaning companies
- West London Crown Construction LtdBuilders
- Dahlia Investment Group LimitedProperty developers
- Ekon Electrics LtdElectricians
- R&G Maintenance LtdCleaning companies
- Cornerstone Homes & Estates LtdProperty developers
What happens if Cosmin and Partener 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
- 12813394
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 14 August 2020 (6 years ago)
- Registered office
- 76 Blunden Drive, Slough, SL3 8WQ
- Nature of business
- Construction of domestic buildings (SIC 41202)
Demolition (SIC 43110)
Electrical installation (SIC 43210)
Painting (SIC 43341) - Year end
- 31 August (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 August 2025
- Last confirmation statement
- 1 December 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 Slough
Other active building contractors registered in Slough.
- Crafthome Solutions Limited2024
- Cribfix Ltd2025
- Crown Build Constructions Ltd2025
- Crownshield Interiors Ltd2016
- D S Roofing Solutions Ltd2023
- Dalwinder Singh Haulage Ltd2017
- Danyrepair91 Limited2025
- Darpar Enterprises Ltd2024
All building contractors in Slough · All trades in Slough · Builders across the UK
Frequently asked questions
When are Cosmin and Partener Ltd's accounts due?
Cosmin and Partener 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 Cosmin and Partener 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 Cosmin and Partener Ltd still trading?
Cosmin and Partener 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 Cosmin and Partener Ltd do?
Cosmin and Partener Ltd is registered under Construction of domestic buildings (SIC 41202); Demolition (SIC 43110); Electrical installation (SIC 43210); Painting (SIC 43341).
How old is Cosmin and Partener Ltd?
Cosmin and Partener Ltd was incorporated on 14 August 2020, 6 years ago.
What is the penalty if Cosmin and Partener 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 Cosmin and Partener 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.