- Companies
- Plumbers and heating engineers
- Sheffield
- South Yorkshire Mechanical Services Limited
South Yorkshire Mechanical Services Limited
- Company number
- 12181081
- Incorporated
- 30 Aug 20197 years trading
- Registered office
- 213 Derbyshire Lane, Norton Lees, Sheffield, South Yorkshire, S8 8SA
- Nature of business
- Plumbing, heat and air-conditioning installation
South Yorkshire Mechanical Services Limited is a 7-year-old private limited company registered in Sheffield, company number 12181081, one of 305 plumbing and heating companies in Sheffield. Its next accounts are due at Companies House on 31 May 2027, and the CT600 for the period to 31 August 2026 is due at HMRC on 31 August 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 £42K (+10.6%) on the year before, to £437K.
- Net assets rose in 5 of 5 year-on-year comparisons on record.
- Current assets of £1.1M against £661K owed within a year: 1.6 times cover.
- 6 employees on average during the year.
- Balance sheets on record for 6 years, 2020 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Aug 2025 | £437K | £700K | £1.1M | £661K | 6 |
| 31 Aug 2024 | £395K | £474K | £835K | £480K | 6 |
| 31 Aug 2023 | £387K | £441K | £1.4M | £1M | 5 |
| 31 Aug 2022 | £354K | £375K | £818K | £452K | 3 |
| 31 Aug 2021 | £221K | £611K | £357K | 4 | |
| 31 Aug 2020 | £102K | £328K | £235K | 4 |
Where South Yorkshire Mechanical Services Limited is registered
The registered office is in Sheffield (S8), in the Sheffield local authority area, Yorkshire and The Humber. Show S8 8SA on a map.
Other trade companies in S8
- TWS Maintenance Division LtdInstallers
- True North Campers LimitedMotor traders
- Cleangoo LtdCleaning companies
- Made Spaces LtdBuilders
- Hawthorn Holt Properties LimitedProperty developers
- Aml Maintenance LimitedFacilities management
- Akinkobim LtdCleaning companies
- Oxo Electrical and Building Services LimitedElectricians
Also registered at this address
22 other companies use the same registered office as South Yorkshire Mechanical Services Limited.
- A B Building Projects LimitedBuilders
- A W Electrics (Sheffield) LimitedElectricians
- Aml Maintenance LimitedFacilities management
- Apexfit Joinery and Shop Fit LimitedJoiners and carpenters
- BCM Property Maintenance LtdFinishing trades
- BP Tree Care LimitedLandscapers and gardeners
- Bungalows 2 LimitedBuilders
- Cundy Electrical LimitedElectricians
- Davally Garden Services LimitedSpecialist contractors
- DBFM LimitedElectricians
- Ecclesall Consultancy LtdProperty developers
- Ecclesall Design LtdProperty developers
- Edmondson Gas & Plumbing LtdPlumbers and heating engineers
- JB Renovations & Maintenance LimitedFinishing trades
- JRH Property Maintenance LimitedFinishing trades
- Luke Interiors LimitedPlasterers
- M B Earthmoving LtdGroundworks and demolition
- Maintenance Plus LtdRepair services
- Silver Fox Cleaning Services LtdCleaning companies
- True North Campers LimitedMotor traders
- Wallscapes LimitedInstallers
- Yorkshire Brickwork LimitedBuilders
What happens if South Yorkshire Mechanical Services 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 May 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jun 2027 to 30 Jun 2027 | £150 |
| 1 to 3 months late | 1 Jul 2027 to 31 Aug 2027 | £375 |
| 3 to 6 months late | 1 Sep 2027 to 30 Nov 2027 | £750 |
| More than 6 months late | From 1 Dec 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Sep 2027 | £200 |
| 3 months late | 30 Nov 2027 | another £200 |
| 6 months late | 29 Feb 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Aug 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
- 12181081
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 30 August 2019 (7 years ago)
- Registered office
- 213 Derbyshire Lane, Norton Lees, Sheffield, South Yorkshire, S8 8SA
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 August (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 August 2025
- Last confirmation statement
- 29 August 2026
- Previous names
- South Yorkshire Mechanical Limited (until 5 Sep 2019)
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 Sheffield
Other active plumbing and heating companies registered in Sheffield.
- SP Gas and Heating Services Limited2024
- SPS Air Con and Heating Ltd2026
- Strafford & Kent Limited2005
- Swift Gas Limited2021
- Swift Heating Installations Ltd2025
- Syfm Ltd2023
- Syntax Heating Systems Ltd2026
- T A H Plumbing Limited2022
All plumbing and heating companies in Sheffield · All trades in Sheffield · Plumbers and heating engineers across the UK
Frequently asked questions
When are South Yorkshire Mechanical Services Limited's accounts due?
South Yorkshire Mechanical Services Limited's next accounts are due at Companies House by 31 May 2027 (in 230 days), covering the period to 31 August 2026.
When is South Yorkshire Mechanical Services Limited's CT600 due?
The CT600 for the period to 31 August 2026 is due at HMRC by 31 August 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 June 2027.
Is South Yorkshire Mechanical Services Limited still trading?
South Yorkshire Mechanical Services Limited is listed as active on the Companies House register (checked 13 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 South Yorkshire Mechanical Services Limited do?
South Yorkshire Mechanical Services Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is South Yorkshire Mechanical Services Limited?
South Yorkshire Mechanical Services Limited was incorporated on 30 August 2019, 7 years ago.
What is the penalty if South Yorkshire Mechanical Services 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 South Yorkshire Mechanical Services Limited on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 13 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.