- Companies
- Plumbers and heating engineers
- Hatfield
- Fusion Heat Ltd
Fusion Heat Ltd
- Company number
- 09839519
- Incorporated
- 23 Oct 201510 years trading
- Registered office
- 5 Home Farm Cottages North Mymms Park, North Mymms, Hatfield, Hertfordshire, AL9 7TJ
- Nature of business
- Plumbing, heat and air-conditioning installation
Fusion Heat Ltd is a 10-year-old private limited company registered in Hatfield, company number 09839519, one of 38 plumbing and heating companies in Hatfield. Its next accounts are due at Companies House on 25 October 2026, and its first CT600 is due at HMRC on 31 October 2026.
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 £4,036 (+17.7%) on the year before, to -£19K.
- Net assets rose in 3 of 9 year-on-year comparisons on record.
- Current assets of £1,529 against £19K owed within a year: 0.1 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 10 years, 2016 to 2024.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Oct 2024 | -£19K | £1,529 | £19K | 2 | |
| 31 Oct 2023 | -£23K | £726 | £21K | 2 | |
| 26 Oct 2023 | £23K | £726 | £21K | 2 | |
| 31 Oct 2022 | -£21K | £0 | 2 | ||
| 31 Oct 2021 | -£12K | £2,084 | £9,464 | 2 | |
| 31 Oct 2020 | -£12K | £4,371 | £4,949 | 2 | |
| 31 Oct 2019 | -£2,985 | £3,344 | £7,629 | 2 | |
| 31 Oct 2018 | -£580 | -£1,427 | £3,447 | ||
| 31 Oct 2017 | £1,326 | £355 | £1,476 | £4,050 | |
| 31 Oct 2016 | -£171 | £378 | £652 | £823 |
Where Fusion Heat Ltd is registered
The registered office is in Hatfield (AL9), in the Welwyn Hatfield local authority area, East of England. Show AL9 7TJ on a map.
Other trade companies in AL9
- DMC Equity LtdProperty developers
- Summit Air Conditioning Services LtdPlumbers and heating engineers
- Teknosa Automotive LimitedMotor traders
- Enki Construction LtdBuilders
- Queensbury ST Ippolyts LimitedBuilders
- William Douglas Acquisitions LimitedProperty developers
- LG Site Services LimitedBuilders
- Miella Construction LtdPlumbers and heating engineers
What happens if Fusion Heat 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 25 October 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 26 Oct 2026 to 25 Nov 2026 | £150 |
| 1 to 3 months late | 26 Nov 2026 to 25 Jan 2027 | £375 |
| 3 to 6 months late | 26 Jan 2027 to 25 Apr 2027 | £750 |
| More than 6 months late | From 26 Apr 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 26 Jan 2027 | £200 |
| 3 months late | 25 Apr 2027 | another £200 |
| 6 months late | 25 Jul 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 25 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
- 09839519
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 23 October 2015 (10 years ago)
- Registered office
- 5 Home Farm Cottages North Mymms Park, North Mymms, Hatfield, Hertfordshire, AL9 7TJ
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 24 October (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 October 2024
- Last confirmation statement
- 22 October 2025
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 Hatfield
Other active plumbing and heating companies registered in Hatfield.
- Hydraulika Limited2022
- JJ Heating and Cooling Ltd2018
- Mansells Heating Ltd2022
- Miella Construction Ltd2026
- Miss Fixit Plumbing & Heating Limited2025
- Onecall Plumbing Ltd2024
- Perfect Flow Plumbing Ltd2002
- Plush Heating Ltd2021
All plumbing and heating companies in Hatfield · All trades in Hatfield · Plumbers and heating engineers across the UK
Frequently asked questions
When are Fusion Heat Ltd's accounts due?
Fusion Heat Ltd's next accounts are due at Companies House by 25 October 2026 (in 12 days), covering the period to 25 January 2026.
When is Fusion Heat Ltd's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 31 October 2025, due by 31 October 2026, and one for the period to 25 January 2026, due by 25 January 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Fusion Heat Ltd still trading?
Fusion Heat 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 Fusion Heat Ltd do?
Fusion Heat Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Fusion Heat Ltd?
Fusion Heat Ltd was incorporated on 23 October 2015, 10 years ago.
What is the penalty if Fusion Heat 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 Fusion Heat 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.