- Companies
- Plumbers and heating engineers
- Bradford
- Simmthornes Mechanical Services Ltd.
Simmthornes Mechanical Services Ltd.
- Company number
- 13457382
- Incorporated
- 15 Jun 20215 years trading
- Registered office
- Unit K-L, Wibsey Perseverance Mills, Mill Street, Bradford, BD6 3BQ
- Nature of business
- Plumbing, heat and air-conditioning installation
Simmthornes Mechanical Services Ltd. is a 5-year-old private limited company registered in Bradford, company number 13457382, one of 173 plumbing and heating companies in Bradford. Its next accounts are due at Companies House on 31 March 2027, and the CT600 for the period to 30 June 2026 is due at HMRC on 30 June 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 £93K (+138.1%) on the year before, to £160K.
- Net assets rose in 2 of 3 year-on-year comparisons on record.
- Current assets of £465K against £322K owed within a year: 1.4 times cover.
- 10 employees on average during the year.
- Balance sheets on record for 4 years, 2022 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Jun 2025 | £160K | £97K | £465K | £322K | 10 |
| 30 Jun 2024 | £67K | £240K | £406K | £317K | 10 |
| 30 Jun 2023 | £8,838 | £127K | £258K | £314K | 7 |
| 30 Jun 2022 | £47K | £18K | £267K | £220K | 6 |
Where Simmthornes Mechanical Services Ltd. is registered
The registered office is in Bradford (BD6), in the Bradford local authority area, Yorkshire and The Humber. Show BD6 3BQ on a map.
Other trade companies in BD6
- Be Cleean LimitedCleaning companies
- RST Heating and Plumbing LtdPlumbers and heating engineers
- Vanhaus Yorkshire LtdMotor traders
- Iron Detailing LtdCleaning companies
- C & B Bin Clean LtdCleaning companies
- Cars4Less247 LtdMotor traders
- Tridale Windows LimitedJoiners and carpenters
- SJ Motors & Developer LtdMotor traders
What happens if Simmthornes 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 31 March 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Apr 2027 to 30 Apr 2027 | £150 |
| 1 to 3 months late | 1 May 2027 to 30 Jun 2027 | £375 |
| 3 to 6 months late | 1 Jul 2027 to 30 Sep 2027 | £750 |
| More than 6 months late | From 1 Oct 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jul 2027 | £200 |
| 3 months late | 30 Sep 2027 | another £200 |
| 6 months late | 30 Dec 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Jun 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
- 13457382
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 15 June 2021 (5 years ago)
- Registered office
- Unit K-L, Wibsey Perseverance Mills, Mill Street, Bradford, BD6 3BQ
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 30 June (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 June 2025
- Last confirmation statement
- 14 June 2026
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 Bradford
Other active plumbing and heating companies registered in Bradford.
- Smart Plumbers Limited2024
- Steven Wild Limited2019
- Stratton Energy Ltd2025
- Subzeroheating Ltd2025
- Success Heating & Energy Ltd2019
- T.Barrett All Trade Contractors Limited2017
- Tags Plumbing and Heating Limited2013
- TC Refrigeration Ltd2026
All plumbing and heating companies in Bradford · All trades in Bradford · Plumbers and heating engineers across the UK
Frequently asked questions
When are Simmthornes Mechanical Services Ltd.'s accounts due?
Simmthornes Mechanical Services Ltd.'s next accounts are due at Companies House by 31 March 2027 (in 169 days), covering the period to 30 June 2026.
When is Simmthornes Mechanical Services Ltd.'s CT600 due?
The CT600 for the period to 30 June 2026 is due at HMRC by 30 June 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 April 2027.
Is Simmthornes Mechanical Services Ltd. still trading?
Simmthornes 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 Simmthornes Mechanical Services Ltd. do?
Simmthornes Mechanical Services Ltd. is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Simmthornes Mechanical Services Ltd.?
Simmthornes Mechanical Services Ltd. was incorporated on 15 June 2021, 5 years ago.
What is the penalty if Simmthornes 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 Simmthornes 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.