- Companies
- Installers
- Oxford
- D & M Thermal Limited
D & M Thermal Limited
- Company number
- 15520563
- Incorporated
- 25 Feb 20242 years trading
- Registered office
- 66 Meadow Close, Farmoor, Oxford, OX2 9NZ
- Nature of business
- Other construction installation
D & M Thermal Limited is a 2-year-old private limited company registered in Oxford, company number 15520563, one of 23 installation companies (insulation, lifts, shutters and similar) in Oxford. Its next accounts are due at Companies House on 31 December 2026, and the CT600 for the period to 31 March 2026 is due at HMRC on 31 March 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Financial snapshot, 2025
From the balance sheet at 31 March 2025, as filed at Companies House.
Where D & M Thermal Limited is registered
The registered office is in Oxford (OX2), in the Vale of White Horse local authority area, South East. Show OX2 9NZ on a map.
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- Aj Berry LtdElectricians
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- Macpro GW LimitedProperty developers
What happens if D & M Thermal 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 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- 15520563
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 25 February 2024 (2 years ago)
- Registered office
- 66 Meadow Close, Farmoor, Oxford, OX2 9NZ
- Nature of business
- Other construction installation (SIC 43290)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 24 February 2026
Filing notes for installation companies (insulation, lifts, shutters and similar)
Installation companies (insulation, lifts, shutters, solar and similar) often buy stock and equipment up front, so stock at the year end and capital allowances both affect the tax bill.
Similar companies in Oxford
Other active installation companies (insulation, lifts, shutters and similar) registered in Oxford.
- Deson Project Management Consultancy Ltd2018
- Dodge Solar Ltd2026
- E.N.K. Construction Limited2018
- Enviro-Spec UK Ltd2022
- Ibra Construction Ltd2018
- John Burder Construction Limited2011
- Melente Ltd2023
- Mheaven Ltd2022
All installation companies (insulation, lifts, shutters and similar) in Oxford · All trades in Oxford · Installers across the UK
Frequently asked questions
When are D & M Thermal Limited's accounts due?
D & M Thermal Limited's next accounts are due at Companies House by 31 December 2026 (in 79 days), covering the period to 31 March 2026.
When is D & M Thermal Limited's CT600 due?
The CT600 for the period to 31 March 2026 is due at HMRC by 31 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2027.
Is D & M Thermal Limited still trading?
D & M Thermal 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 D & M Thermal Limited do?
D & M Thermal Limited is registered under Other construction installation (SIC 43290).
How old is D & M Thermal Limited?
D & M Thermal Limited was incorporated on 25 February 2024, 2 years ago.
What is the penalty if D & M Thermal 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 D & M Thermal 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.