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- Oncore Heating Limited
Company profile · Plumbers and heating engineers
Oncore Heating Limited
Oncore Heating Limited is a 3-year-old private limited company registered in Cumbria, company number 14910606, one of the UK's plumbing and heating companies. Its next accounts are due at Companies House on 31 March 2027, and the CT600 for the period to 30 June 2026 is due at HMRC on 30 June 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Financial snapshot, 2025
From the balance sheet at 30 June 2025, as filed at Companies House.
Oncore Heating Limited over the years
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.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 2 years, 2024 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Jun 2025 | £100 | 0 | |||
| 30 Jun 2024 | £100 | 2 |
Where Oncore Heating Limited is registered
The registered office is in Cumbria (LA23), in the Westmorland and Furness local authority area, North West. Show LA23 3AS on a map.
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What happens if Oncore Heating 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 March 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Apr 2027 to 30 Apr 2027 | £150 |
| 1 to 3 months late | 1 May 2027 to 30 Jun 2027 | £375 |
| 3 to 6 months late | 1 Jul 2027 to 30 Sep 2027 | £750 |
| More than 6 months late | From 1 Oct 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jul 2027 | £200 |
| 3 months late | 30 Sep 2027 | another £200 |
| 6 months late | 30 Dec 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Jun 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
- 14910606
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 2 June 2023 (3 years ago)
- Registered office
- Oncore House Longlands Road, Bowness on Windermere, Cumbria, LA23 3AS
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 30 June (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 June 2025
- Last confirmation statement
- 1 June 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
Other active plumbing and heating companies.
- JB Plumbing & Drainage Ltd2023
- GH Heating and Cooling Ltd2023
- Built Right (Birmingham) Ltd2023
- Holden & Sons Ltd2023
- Adi's Plumbing+ Ltd2023
- DN Refrigeration Ltd2023
- GH Ventilation Services Ltd2023
- Dany A2Z Maintenance Services Limited2023
Plumbers and heating engineers across the UK
Frequently asked questions
When are Oncore Heating Limited's accounts due?
Oncore Heating Limited's next accounts are due at Companies House by 31 March 2027 (in 170 days), covering the period to 30 June 2026.
When is Oncore Heating Limited's CT600 due?
The CT600 for the period to 30 June 2026 is due at HMRC by 30 June 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 April 2027.
Is Oncore Heating Limited still trading?
Oncore Heating 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 Oncore Heating Limited do?
Oncore Heating Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Oncore Heating Limited?
Oncore Heating Limited was incorporated on 2 June 2023, 3 years ago.
What is the penalty if Oncore Heating 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 Oncore Heating Limited on Companies House for filed documents, officers and the full history.
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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.