- Companies
- Civil engineering
- Rotherham
- Substation Mechanical Electrical Services Ltd
Substation Mechanical Electrical Services Ltd
- Company number
- 15851355
- Incorporated
- 22 Jul 20242 years trading
- Registered office
- Moor Park House Bawtry Road, Wickersley, Rotherham, S66 2BL
- Nature of business
- Construction of utility projects for electricity and telecommunications
Substation Mechanical Electrical Services Ltd is a 2-year-old private limited company registered in Rotherham, company number 15851355, one of 83 civil engineering contractors in Rotherham. 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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Financial snapshot, 2025
From the balance sheet at 31 July 2025, as filed at Companies House.
Where Substation Mechanical Electrical Services Ltd is registered
The registered office is in Rotherham (S66), in the Rotherham local authority area, Yorkshire and The Humber. Show S66 2BL on a map.
Other trade companies in S66
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- Viper Roofing LtdInstallers
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- Tak Tech LtdBuilders
Shared registered office
42 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 Substation Mechanical Electrical 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
- 15851355
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 22 July 2024 (2 years ago)
- Registered office
- Moor Park House Bawtry Road, Wickersley, Rotherham, S66 2BL
- Nature of business
- Construction of utility projects for electricity and telecommunications (SIC 42220)
- Year end
- 31 July (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 July 2025
- Last confirmation statement
- 20 July 2026
Filing notes for civil engineering contractors
Civil engineering contractors usually carry plant and machinery, so capital allowances (the annual investment allowance and the main pool) do much of the work in the corporation tax computation.
Similar companies in Rotherham
Other active civil engineering contractors registered in Rotherham.
- Swift Groundworks and Reinstatement Ltd2018
- T20 Utilities Ltd2021
- Tjcivils Ltd2020
- TLR Eng Ltd2026
- TMM Group Limited2022
- Trackmaster33 Ltd2025
- Traffic Engineering and Management Services Limited2012
- TS Management Solutions Ltd2026
All civil engineering contractors in Rotherham · All trades in Rotherham · Civil engineering across the UK
Frequently asked questions
When are Substation Mechanical Electrical Services Ltd's accounts due?
Substation Mechanical Electrical Services Ltd's next accounts are due at Companies House by 30 April 2027 (in 199 days), covering the period to 31 July 2026.
When is Substation Mechanical Electrical 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 Substation Mechanical Electrical Services Ltd still trading?
Substation Mechanical Electrical 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 Substation Mechanical Electrical Services Ltd do?
Substation Mechanical Electrical Services Ltd is registered under Construction of utility projects for electricity and telecommunications (SIC 42220).
How old is Substation Mechanical Electrical Services Ltd?
Substation Mechanical Electrical Services Ltd was incorporated on 22 July 2024, 2 years ago.
What is the penalty if Substation Mechanical Electrical 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 Substation Mechanical Electrical 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.