- Companies
- Plumbers and heating engineers
- Dartford
- TSM Heating Services Ltd
TSM Heating Services Ltd
- Company number
- 09647586
- Incorporated
- 19 Jun 201511 years trading
- Registered office
- 7 Waterside Court, Crossways Business Park, Dartford, Kent, DA2 6NX
- Nature of business
- Plumbing, heat and air-conditioning installation
TSM Heating Services Ltd is a 11-year-old private limited company registered in Dartford, company number 09647586, one of 121 plumbing and heating companies in Dartford. 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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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 down £108K (-15%) on the year before, to £611K.
- Net assets rose in 4 of 6 year-on-year comparisons on record.
- Current assets of £1.4M against £854K owed within a year: 1.7 times cover.
- 7 employees on average, up from 6 the year before.
- Balance sheets on record for 8 years, 2016 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Jun 2025 | £611K | £339K | £1.4M | £854K | 7 |
| 30 Jun 2024 | £718K | £438K | £1.6M | £864K | 6 |
| 30 Jun 2023 | £577K | £415K | £1M | £462K | 5 |
| 30 Jun 2022 | £302K | £307K | £961K | £647K | 4 |
| 30 Jun 2021 | £257 | £55K | £208K | £176K | 3 |
| 30 Jun 2020 | £256 | £272K | £212K | 2 | |
| 30 Jun 2019 | £4,236 | £77K | £77K | 3 | |
| 30 Jun 2016 | £14K | £20K | £47K | £33K |
Public contracts won
TSM Heating Services Ltd has one public sector contract award on record; the ones with their own published value total £200K (2023). Source: Contracts Finder and Find a Tender award notices. These were matched by the company's exact name because the notice gave no company number.
| Buyer | Contract | Value | Awarded |
|---|---|---|---|
| Canterbury City Council | Re-plumbing at Cranmer House, London Road, Canterbury | £200K | 9 May 2023 |
Where TSM Heating Services Ltd is registered
The registered office is in Dartford (DA2), in the Dartford local authority area, South East. Show DA2 6NX on a map.
Other trade companies in DA2
- Alija Construction LtdBuilders
- P&E Premier Holdings LimitedProperty developers
- MCP Motors LtdMechanics and garages
- Lude LtdFinishing trades
- Netti's Cleaning LtdCleaning companies
- Inspired Gardens & Landscapes Kent LtdLandscapers and gardeners
- Elite FM LimitedFacilities management
- Cleansl8 LtdCleaning companies
Also registered at this address
1 other company uses the same registered office as TSM Heating Services Ltd.
- TSM Energy LimitedPlumbers and heating engineers
What happens if TSM 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 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
- 09647586
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 19 June 2015 (11 years ago)
- Registered office
- 7 Waterside Court, Crossways Business Park, Dartford, Kent, DA2 6NX
- 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
- 5 August 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 Dartford
Other active plumbing and heating companies registered in Dartford.
- V Rivers Ltd2017
- Vagolis Limited2012
- Warmnest Solutions Ltd2025
- Wefit Air Conditioning Limited2025
- WND Refrigeration Limited2026
- 1ST Call Plumbing and Heating London Ltd2021
- 29 Heating Limited2017
- Able.Fire Ltd2026
All plumbing and heating companies in Dartford · All trades in Dartford · Plumbers and heating engineers across the UK
Frequently asked questions
When are TSM Heating Services Ltd's accounts due?
TSM Heating Services Ltd's next accounts are due at Companies House by 31 March 2027 (in 170 days), covering the period to 30 June 2026.
When is TSM Heating Services Ltd'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 TSM Heating Services Ltd still trading?
TSM 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 TSM Heating Services Ltd do?
TSM Heating Services Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is TSM Heating Services Ltd?
TSM Heating Services Ltd was incorporated on 19 June 2015, 11 years ago.
Has TSM Heating Services Ltd won public sector contracts?
Yes. TSM Heating Services Ltd has one contract award from public bodies on Contracts Finder and Find a Tender (those with their own published value total £200K), most recently from Canterbury City Council.
What is the penalty if TSM 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 TSM 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.