- Companies
- Plumbers and heating engineers
- Merthyr Tydfil
- Callum James Heating Ltd
Callum James Heating Ltd
- Company number
- 14621562
- Incorporated
- 27 Jan 20233 years trading
- Registered office
- 1 Morrell Street, Merthyr Tydfil, CF47 0NG
- Nature of business
- Plumbing, heat and air-conditioning installation
Callum James Heating Ltd is a 3-year-old private limited company registered in Merthyr Tydfil, company number 14621562, one of 21 plumbing and heating companies in Merthyr Tydfil. 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 £4,139 (+42.7%) on the year before, to £14K.
- Current assets of £39K against £16K owed within a year: 2.4 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 3 years, 2024 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Jan 2026 | £14K | £37K | £39K | £16K | 2 |
| 31 Jan 2025 | £9,684 | £6,454 | £15K | £2,893 | 2 |
| 31 Jan 2024 | £28K | £9,948 | £1,841 | 2 |
Where Callum James Heating Ltd is registered
The registered office is in Merthyr Tydfil (CF47), in the Merthyr Tydfil local authority area, Wales. Show CF47 0NG on a map.
Other trade companies in CF47
- Rji Services LtdMechanics and garages
- R&P Motor Services LtdMechanics and garages
- Grain and Groove Carpentry LtdJoiners and carpenters
- Nextnest Properties LimitedProperty developers
- Frontier Power Solutions LtdElectricians
- Jude Developments LtdProperty developers
- Taff Group Property Services LtdPainters and decorators
- Anew Energy LimitedPlumbers and heating engineers
Also registered at this address
1 other company uses the same registered office as Callum James Heating Ltd.
- Jude Developments LtdProperty developers
What happens if Callum James Heating 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 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
- 14621562
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 27 January 2023 (3 years ago)
- Registered office
- 1 Morrell Street, Merthyr Tydfil, CF47 0NG
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 January (accounting reference date)
- Accounts type
- Unaudited abridged
- Last accounts made up to
- 31 January 2025
- Last confirmation statement
- 15 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 Merthyr Tydfil
Other active plumbing and heating companies registered in Merthyr Tydfil.
- CDS Heating Services Ltd2025
- CKM Plumbing & Heating Services Limited2024
- Dowlais Heating Ltd2002
- Enhanced Heating and Plumbing Ltd2025
- First Degree Air Conditioning Services Ltd2025
- Flow Taenellwyr Tan Ltd2017
- G&S Heating Services Limited2014
- Galaxy Plumbing and Property Maintenance Ltd2016
All plumbing and heating companies in Merthyr Tydfil · All trades in Merthyr Tydfil · Plumbers and heating engineers across the UK
Frequently asked questions
When are Callum James Heating Ltd's accounts due?
Callum James Heating Ltd's next accounts are due at Companies House by 31 October 2026 (in 18 days), covering the period to 31 January 2026.
When is Callum James Heating Ltd'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 Callum James Heating Ltd still trading?
Callum James Heating 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 Callum James Heating Ltd do?
Callum James Heating Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Callum James Heating Ltd?
Callum James Heating Ltd was incorporated on 27 January 2023, 3 years ago.
What is the penalty if Callum James Heating 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 Callum James Heating 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.