- Companies
- Plumbers and heating engineers
- Oxford
- Koc Plumbers Limited
Koc Plumbers Limited
- Company number
- 12515752
- Incorporated
- 12 Mar 20206 years trading
- Registered office
- 10 Cherwell Drive, Marston, Oxford, OX3 0LY
- Nature of business
- Plumbing, heat and air-conditioning installation
Koc Plumbers Limited is a 6-year-old private limited company registered in Oxford, company number 12515752, one of 62 plumbing and heating companies in Oxford. Its next accounts are due at Companies House on 31 October 2027, and the CT600 for the period to 31 January 2027 is due at HMRC on 31 January 2028.
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 £2,141 (-62.9%) on the year before, to £1,263.
- Net assets rose in 3 of 5 year-on-year comparisons on record.
- Current assets of £5,170 against £3,907 owed within a year: 1.3 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 6 years, 2021 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Jan 2026 | £1,263 | £5,170 | £3,907 | 1 | |
| 31 Jan 2025 | £3,404 | £5,820 | £2,416 | 1 | |
| 31 Jan 2024 | £6,141 | £9,155 | £3,014 | 1 | |
| 31 Jan 2023 | £5,926 | £9,873 | £3,947 | 1 | |
| 31 Jan 2022 | £1,620 | £3,166 | £1,546 | 1 | |
| 31 Jan 2021 | £284 | £2,453 | £2,169 | 1 |
Where Koc Plumbers Limited is registered
The registered office is in Oxford (OX3), in the Oxford local authority area, South East. Show OX3 0LY on a map.
Other trade companies in OX3
- Hussan LimitedBuilders
- Washward LtdPlumbers and heating engineers
- Start Fresh Cleaning Group LtdCleaning companies
- Lynx Carpet Care LtdCleaning companies
- Zafrose LtdSpecialist contractors
- The Property Edition LimitedFinishing trades
- DC Electrical Ox LtdElectricians
- Haddie Plumbing and Utilities LtdPlumbers and heating engineers
What happens if Koc Plumbers Limited 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 October 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Nov 2027 to 30 Nov 2027 | £150 |
| 1 to 3 months late | 1 Dec 2027 to 31 Jan 2028 | £375 |
| 3 to 6 months late | 1 Feb 2028 to 30 Apr 2028 | £750 |
| More than 6 months late | From 1 May 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Feb 2028 | £200 |
| 3 months late | 30 Apr 2028 | another £200 |
| 6 months late | 31 Jul 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jan 2029 | 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
- 12515752
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 12 March 2020 (6 years ago)
- Registered office
- 10 Cherwell Drive, Marston, Oxford, OX3 0LY
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 January (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 January 2026
- Last confirmation statement
- 11 March 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 Oxford
Other active plumbing and heating companies registered in Oxford.
- Lemarsh Building Services Limited2004
- M. J. Few Plumbing & Heating Limited2003
- MJS Plumbing & Electrical Ltd2021
- N. & S. Connolly Limited2007
- Ne Plumbing & Heating Solutions Ltd2018
- Nexa Energy Limited2024
- Olma Services Ltd2024
- Oxford HVAC Limited2026
All plumbing and heating companies in Oxford · All trades in Oxford · Plumbers and heating engineers across the UK
Frequently asked questions
When are Koc Plumbers Limited's accounts due?
Koc Plumbers Limited's next accounts are due at Companies House by 31 October 2027 (in 383 days), covering the period to 31 January 2027.
When is Koc Plumbers Limited's CT600 due?
The CT600 for the period to 31 January 2027 is due at HMRC by 31 January 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 November 2027.
Is Koc Plumbers Limited still trading?
Koc Plumbers Limited 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 Koc Plumbers Limited do?
Koc Plumbers Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Koc Plumbers Limited?
Koc Plumbers Limited was incorporated on 12 March 2020, 6 years ago.
What is the penalty if Koc Plumbers Limited 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 Koc Plumbers Limited 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.