- Companies
- Plumbers and heating engineers
- Plymouth
- DMH Services (South West) Ltd
DMH Services (South West) Ltd
- Company number
- 09667352
- Incorporated
- 2 Jul 201511 years trading
- Registered office
- 33 Mary Seacole Road, Plymouth, PL1 3JY
- Nature of business
- Plumbing, heat and air-conditioning installation
DMH Services (South West) Ltd is a 11-year-old private limited company registered in Plymouth, company number 09667352, one of 136 plumbing and heating companies in Plymouth. Its next accounts are due at Companies House on 31 December 2027, and the CT600 for the period to 31 March 2027 is due at HMRC on 31 March 2028.
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 £13K (-22.4%) on the year before, to £44K.
- Net assets rose in 5 of 9 year-on-year comparisons on record.
- Current assets of £90K against £47K owed within a year: 1.9 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 10 years, 2017 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2026 | £44K | £80K | £90K | £47K | 2 |
| 31 Mar 2025 | £56K | £89K | £114K | £60K | 2 |
| 31 Mar 2024 | £83K | £55K | £121K | £40K | 2 |
| 31 Mar 2023 | £77K | £98K | £154K | £77K | 1 |
| 31 Mar 2022 | £9,856 | £35K | £37K | £30K | 1 |
| 31 Mar 2021 | £1,388 | £10K | £41K | £9,814 | 1 |
| 31 Mar 2020 | £3,689 | £12K | £18K | £24K | 1 |
| 31 Mar 2019 | £338 | £13K | £19K | £30K | 1 |
| 31 Mar 2018 | £155 | £5,678 | £17K | £33K | 2 |
| 31 Mar 2017 | £360 | £4,157 | £8,621 | £25K |
Where DMH Services (South West) Ltd is registered
The registered office is in Plymouth (PL1), in the Plymouth local authority area, South West. Show PL1 3JY on a map.
Other trade companies in PL1
- Clearway Drives & Patios LtdLandscapers and gardeners
- Techshopplymouth LtdRepair services
- Plymouth Garage LtdMechanics and garages
- Westmore Construction (South West) LtdProperty developers
- SW MOT LtdMechanics and garages
- SW Garage LtdMechanics and garages
- Mitchell Electrical (SW) LtdElectricians
- Mallu S Wheels UK LtdMotor traders
Shared registered office
48 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 DMH Services (South West) 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 December 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2028 to 31 Jan 2028 | £150 |
| 1 to 3 months late | 1 Feb 2028 to 31 Mar 2028 | £375 |
| 3 to 6 months late | 1 Apr 2028 to 30 Jun 2028 | £750 |
| More than 6 months late | From 1 Jul 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2028 | £200 |
| 3 months late | 30 Jun 2028 | another £200 |
| 6 months late | 30 Sep 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 2029 | 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
- 09667352
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 2 July 2015 (11 years ago)
- Registered office
- 33 Mary Seacole Road, Plymouth, PL1 3JY
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2026
- Last confirmation statement
- 1 July 2026
- Previous names
- Mismatch Limited (until 13 Jun 2016)
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 Plymouth
Other active plumbing and heating companies registered in Plymouth.
- DMW Plumbing and Heating Ltd2021
- Dream Bathrooms Ltd2007
- Dream Kitchens (SW) Ltd2015
- Dynamic Engineering Services Ltd2016
- Eco Air (SW) Ltd2015
- Eco Engineers South West Ltd2012
- Elburton Heating Ltd2021
- Envirogas UK Ltd2020
All plumbing and heating companies in Plymouth · All trades in Plymouth · Plumbers and heating engineers across the UK
Frequently asked questions
When are DMH Services (South West) Ltd's accounts due?
DMH Services (South West) Ltd's next accounts are due at Companies House by 31 December 2027 (in 444 days), covering the period to 31 March 2027.
When is DMH Services (South West) Ltd's CT600 due?
The CT600 for the period to 31 March 2027 is due at HMRC by 31 March 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2028.
Is DMH Services (South West) Ltd still trading?
DMH Services (South West) 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 DMH Services (South West) Ltd do?
DMH Services (South West) Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is DMH Services (South West) Ltd?
DMH Services (South West) Ltd was incorporated on 2 July 2015, 11 years ago.
What is the penalty if DMH Services (South West) 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 DMH Services (South West) 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.