- Companies
- Plumbers and heating engineers
- Swansea
- Cannon Heating Services Ltd
Cannon Heating Services Ltd
- Company number
- 06401623
- Incorporated
- 17 Oct 200718 years trading
- Registered office
- 4 High Street, Pontardawe, Swansea, SA8 4HU
- Nature of business
- Plumbing, heat and air-conditioning installation
Cannon Heating Services Ltd is a 18-year-old private limited company registered in Swansea, company number 06401623, one of 148 plumbing and heating companies in Swansea. Its next accounts are due at Companies House on 31 July 2027, and the CT600 for the period to 31 October 2026 is due at HMRC on 31 October 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 £1,849 (+12.5%) on the year before, to £17K.
- Net assets rose in 7 of 9 year-on-year comparisons on record.
- Current assets of £61K against £44K owed within a year: 1.4 times cover.
- 1 employee on average, up from 0 the year before.
- Balance sheets on record for 10 years, 2016 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Oct 2025 | £17K | £61K | £44K | 1 | |
| 31 Oct 2024 | £15K | £60K | £1,462 | 0 | |
| 31 Oct 2023 | £12K | £58K | £1,728 | 0 | |
| 31 Oct 2022 | £9,255 | £55K | £1,924 | 1 | |
| 31 Oct 2021 | £6,617 | £55K | £1,819 | 1 | |
| 31 Oct 2020 | £6,211 | £54K | £517 | 1 | |
| 31 Oct 2019 | £6,631 | £1,899 | £44K | £38K | 0 |
| 31 Oct 2018 | £6,131 | £1,266 | £41K | £36K | |
| 31 Oct 2017 | £6,673 | £7,006 | £51K | £45K | |
| 31 Oct 2016 | £1,869 | £0 | £53K | £52K |
Where Cannon Heating Services Ltd is registered
The registered office is in Swansea (SA8), in the Neath Port Talbot local authority area, Wales. Show SA8 4HU on a map.
Other trade companies in SA8
- Pontardawe Hand Car Wash LtdCleaning companies
- BM Carpentry Solutions LimitedJoiners and carpenters
- MS Julian Building Services LimitedProperty developers
- 2MR Property LtdProperty developers
- Davies Groundworks and Construction LtdBuilders
- NJH Car Sales LimitedMotor traders
- The Cleaning Signature LimitedCleaning companies
- Olitill Property Development LtdProperty developers
Shared registered office
32 companies on our pages use this registered office address. An address shared this widely is usually an accountant's office or a company formation agent's service address, not where the business trades from.
What happens if Cannon Heating Services 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 July 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Aug 2027 to 31 Aug 2027 | £150 |
| 1 to 3 months late | 1 Sep 2027 to 31 Oct 2027 | £375 |
| 3 to 6 months late | 1 Nov 2027 to 31 Jan 2028 | £750 |
| More than 6 months late | From 1 Feb 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Nov 2027 | £200 |
| 3 months late | 31 Jan 2028 | another £200 |
| 6 months late | 30 Apr 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Oct 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
- 06401623
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 17 October 2007 (18 years ago)
- Registered office
- 4 High Street, Pontardawe, Swansea, SA8 4HU
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 October (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 October 2025
- Last confirmation statement
- 17 October 2025
- Charges (mortgages)
- 0 outstanding of 2 registered
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 Swansea
Other active plumbing and heating companies registered in Swansea.
- Cityflow Plumbing and Heating Limited2026
- Clima Cooling Solutions Ltd2026
- Coastline Heating Services Limited2019
- Colgas Ltd2025
- Crowsfoot Heating Services Ltd2022
- Dancer Engineering Services Limited2024
- DJP Plumbing and Heating Ltd.2021
- Duramax Plumbing Limited2025
All plumbing and heating companies in Swansea · All trades in Swansea · Plumbers and heating engineers across the UK
Frequently asked questions
When are Cannon Heating Services Ltd's accounts due?
Cannon Heating Services Ltd's next accounts are due at Companies House by 31 July 2027 (in 292 days), covering the period to 31 October 2026.
When is Cannon Heating Services Ltd's CT600 due?
The CT600 for the period to 31 October 2026 is due at HMRC by 31 October 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 August 2027.
Is Cannon Heating Services Ltd still trading?
Cannon Heating Services 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 Cannon Heating Services Ltd do?
Cannon Heating Services Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Cannon Heating Services Ltd?
Cannon Heating Services Ltd was incorporated on 17 October 2007, 18 years ago.
What is the penalty if Cannon Heating Services 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 Cannon Heating Services 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.