- Companies
- Plumbers and heating engineers
- Spennymoor
- Onflo Limited
Onflo Limited
- Company number
- 12385415
- Incorporated
- 3 Jan 20206 years trading
- Registered office
- 4 King Street, Spennymoor, DL16 6QG
- Nature of business
- Plumbing, heat and air-conditioning installation
Onflo Limited is a 6-year-old private limited company registered in Spennymoor, company number 12385415, one of 11 plumbing and heating companies in Spennymoor. Its next accounts are due at Companies House on 31 October 2026, and the CT600 for the period to 31 January 2026 is due at HMRC on 31 January 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 £743 (+8.8%) on the year before, to £9,232.
- Net assets rose in 3 of 4 year-on-year comparisons on record.
- Current assets of £46K against £41K owed within a year: 1.1 times cover.
- 3 employees on average during the year.
- 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 Jan 2025 | £9,232 | £34K | £46K | £41K | 3 |
| 31 Jan 2024 | £8,489 | £46K | £59K | £49K | 3 |
| 31 Jan 2023 | -£10K | £29K | £36K | £56K | 0 |
| 31 Jan 2022 | -£14K | £8,400 | £12K | £35K | 0 |
| 31 Jan 2021 | -£14K | £4,544 | £8,634 | £31K | 0 |
Where Onflo Limited is registered
The registered office is in Spennymoor (DL16), in the County Durham local authority area, North East. Show DL16 6QG on a map.
Other trade companies in DL16
- Edmar Tyre & Exhaust Services LtdMechanics and garages
- Anderson Sweepers North East LimitedCleaning companies
- Ak Signature Cleaning LtdCleaning companies
- Forster House & Co LtdFloor and wall tilers
- Neic Group LtdCleaning companies
- CJP Auto Spa LimitedMechanics and garages
- THG Property Solutions LtdBuilders
- THG Newbuild Services LtdBuilders
Also registered at this address
20 other companies use the same registered office as Onflo Limited.
- Ach Plumbing & Heating Specialists LimitedPlumbers and heating engineers
- CCL Access and Coatings LimitedSpecialist contractors
- Coxhoe Electrical Services LimitedElectricians
- D S Steelworks LtdInstallers
- D Sands Plumbing & Heating Services LtdPlumbers and heating engineers
- Deluxe Improvements LtdLandscapers and gardeners
- Fayzer LtdJoiners and carpenters
- G McKenzie Groundwork's LimitedSpecialist contractors
- Heatwave Plumbing and Heating (Ne) LimitedPlumbers and heating engineers
- Holmes & Sons Electrical Services LimitedElectricians
- Locktech (Ne) LimitedCleaning companies
- Minnikin Flooring Solutions LtdFloor and wall tilers
- Nealons Plastering Services LtdPlasterers
- Paving the Way (Ne) LimitedLandscapers and gardeners
- PB Construction LtdFinishing trades
- Pickering Nook MOT Centre LimitedMechanics and garages
- Scantec Commercials LimitedMechanics and garages
- Specialists Leak Detection LtdPlumbers and heating engineers
- T&H Heating Solutions LtdPlumbers and heating engineers
- The Young Group LimitedPlumbers and heating engineers
What happens if Onflo 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 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Nov 2026 to 30 Nov 2026 | £150 |
| 1 to 3 months late | 1 Dec 2026 to 31 Jan 2027 | £375 |
| 3 to 6 months late | 1 Feb 2027 to 30 Apr 2027 | £750 |
| More than 6 months late | From 1 May 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Feb 2027 | £200 |
| 3 months late | 30 Apr 2027 | another £200 |
| 6 months late | 31 Jul 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jan 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
- 12385415
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 3 January 2020 (6 years ago)
- Registered office
- 4 King Street, Spennymoor, DL16 6QG
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 January (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 January 2025
- Last confirmation statement
- 2 January 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 Spennymoor
Other active plumbing and heating companies registered in Spennymoor.
- Smith & Goodwin Ltd2014
- Specialists Leak Detection Ltd2023
- T&H Heating Solutions Ltd2023
- The Young Group Limited2021
- Ach Plumbing & Heating Specialists Limited2020
- Austin Pickering Heating Limited2006
- D Sands Plumbing & Heating Services Ltd2025
- Heatwave Plumbing and Heating (Ne) Limited2016
All plumbing and heating companies in Spennymoor · All trades in Spennymoor · Plumbers and heating engineers across the UK
Frequently asked questions
When are Onflo Limited's accounts due?
Onflo Limited's next accounts are due at Companies House by 31 October 2026 (in 19 days), covering the period to 31 January 2026.
When is Onflo Limited's CT600 due?
The CT600 for the period to 31 January 2026 is due at HMRC by 31 January 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 November 2026.
Is Onflo Limited still trading?
Onflo 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 Onflo Limited do?
Onflo Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Onflo Limited?
Onflo Limited was incorporated on 3 January 2020, 6 years ago.
What is the penalty if Onflo 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 Onflo 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.