- Companies
- Machinery repair and installation
- Doncaster
- CM Mechanical Services Ltd.
CM Mechanical Services Ltd.
- Company number
- 07702925
- Incorporated
- 13 Jul 201115 years trading
- Registered office
- Unit B1 Harworth Park, Blyth Road, Harworth, Doncaster, DN11 8DB
- Nature of business
- Repair of machinery
CM Mechanical Services Ltd. is a 15-year-old private limited company registered in Doncaster, company number 07702925, one of 137 machinery repair and installation companies in Doncaster. Its next accounts are due at Companies House on 30 April 2027, and the CT600 for the period to 31 July 2026 is due at HMRC on 31 July 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 £197K (+48.6%) on the year before, to £601K.
- Net assets rose in 7 of 9 year-on-year comparisons on record.
- Current assets of £1.4M against £1.6M owed within a year: 0.9 times cover.
- 13 employees on average during the year.
- 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 Jul 2025 | £601K | £193K | £1.4M | £1.6M | 13 |
| 31 Jul 2024 | £404K | £98K | £1.2M | £1.3M | 13 |
| 31 Jul 2023 | £293K | £85K | £917K | £1.2M | 12 |
| 31 Jul 2022 | £225K | £136K | £673K | £720K | 10 |
| 31 Jul 2021 | £49K | £72K | £422K | £511K | 8 |
| 31 Jul 2020 | £5,423 | £32K | £229K | £291K | 8 |
| 31 Jul 2019 | £55K | £21K | £321K | £355K | 8 |
| 31 Jul 2018 | £19K | £25K | £306K | £373K | 6 |
| 31 Jul 2017 | £27K | £11K | £201K | £253K | 3 |
| 31 Jul 2016 | £1,739 | £16K | £226K | £295K |
Where CM Mechanical Services Ltd. is registered
The registered office is in Doncaster (DN11), in the Bassetlaw local authority area, East Midlands. Show DN11 8DB on a map.
Other trade companies in DN11
- Dan Nadin Plumbing, Heating & Electrical LimitedElectricians
- Almatuk LtdMechanics and garages
- Cozy Home (Yorkshire) LimitedPlumbers and heating engineers
- HB Aggregates LimitedSpecialist contractors
- J Morgan Renewables LtdElectricians
- Developments (North West) LimitedProperty developers
- Fortress Barrier Solutions LtdInstallers
- S&A Autotek LtdMechanics and garages
What happens if CM Mechanical 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 30 April 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 May 2027 to 31 May 2027 | £150 |
| 1 to 3 months late | 1 Jun 2027 to 31 Jul 2027 | £375 |
| 3 to 6 months late | 1 Aug 2027 to 31 Oct 2027 | £750 |
| More than 6 months late | From 1 Nov 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Aug 2027 | £200 |
| 3 months late | 31 Oct 2027 | another £200 |
| 6 months late | 31 Jan 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jul 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
- 07702925
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 13 July 2011 (15 years ago)
- Registered office
- Unit B1 Harworth Park, Blyth Road, Harworth, Doncaster, DN11 8DB
- Nature of business
- Repair of machinery (SIC 33120)
- Year end
- 31 July (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 July 2025
- Last confirmation statement
- 10 July 2026
- Charges (mortgages)
- 1 outstanding of 1 registered
Filing notes for machinery repair and installation companies
Machinery repair and installation companies often carry parts stock and specialist tools, and many work on contracts that span the year end.
Similar companies in Doncaster
Other active machinery repair and installation companies registered in Doncaster.
- Commercial Gas Catering Limited2013
- Concours Lifts Ltd2016
- Croft Industrial Boiler Services Limited2021
- CT Plant Repairs Ltd2019
- D Tech Elevators Ltd2018
- Danum Air Conditioning and Refrigeration Ltd2006
- Darfield Motor Controls Ltd2020
- Demircioglu Design Ltd2021
All machinery repair and installation companies in Doncaster · All trades in Doncaster · Machinery repair and installation across the UK
Frequently asked questions
When are CM Mechanical Services Ltd.'s accounts due?
CM Mechanical Services Ltd.'s next accounts are due at Companies House by 30 April 2027 (in 200 days), covering the period to 31 July 2026.
When is CM Mechanical Services Ltd.'s CT600 due?
The CT600 for the period to 31 July 2026 is due at HMRC by 31 July 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 May 2027.
Is CM Mechanical Services Ltd. still trading?
CM Mechanical 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 CM Mechanical Services Ltd. do?
CM Mechanical Services Ltd. is registered under Repair of machinery (SIC 33120).
How old is CM Mechanical Services Ltd.?
CM Mechanical Services Ltd. was incorporated on 13 July 2011, 15 years ago.
What is the penalty if CM Mechanical 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 CM Mechanical 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.