- Companies
- Plumbers and heating engineers
- York
- ST Energy Limited
ST Energy Limited
- Company number
- 11312013
- Incorporated
- 16 Apr 20188 years trading
- Registered office
- 12 Water End, Clifton, York, YO30 6LP
- Nature of business
- Plumbing, heat and air-conditioning installation
ST Energy Limited is a 8-year-old private limited company registered in York, company number 11312013, one of 123 plumbing and heating companies in York. Its next accounts are due at Companies House on 29 January 2027, and the CT600 for the period to 29 April 2026 is due at HMRC on 29 April 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 down £38K (-99.3%) on the year before, to £261.
- Net assets rose in 4 of 6 year-on-year comparisons on record.
- Current assets of £184K against £196K owed within a year: 0.9 times cover.
- 4 employees on average during the year.
- Balance sheets on record for 7 years, 2019 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Apr 2025 | £261 | £86K | £184K | £196K | 4 |
| 30 Apr 2024 | £38K | £44K | £166K | £137K | 4 |
| 30 Apr 2023 | £28K | £68K | £110K | £89K | 2 |
| 30 Apr 2022 | £18K | £78K | £142K | £106K | 2 |
| 29 Apr 2021 | £59K | £82K | £189K | £135K | 2 |
| 29 Apr 2020 | £46K | £73K | £103K | £63K | 2 |
| 29 Apr 2019 | £9,774 | £34K | £25K |
Who runs and owns ST Energy Limited
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officers (2)
| Name | Role | Appointed |
|---|---|---|
| M*** S*** | Director | Apr 2018 |
| L*** T*** | Director | Apr 2018 |
People with significant control (2)
Where ST Energy Limited is registered
The registered office is in York (YO30), in the York local authority area, Yorkshire and The Humber. Show YO30 6LP on a map.
Other trade companies in YO30
- Remi Coulson Roofing & Building LtdProperty developers
- Miller Land Developments LtdProperty developers
- Hutchinson General Builders LtdProperty developers
- JSP Building LtdFinishing trades
- Rhine Facility Solutions LtdCleaning companies
- Luxa Decorators LtdPainters and decorators
- Structaura LtdProperty developers
- Cynefin Developments LimitedProperty developers
What happens if ST Energy 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 29 January 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 30 Jan 2027 to 28 Feb 2027 | £150 |
| 1 to 3 months late | 1 Mar 2027 to 29 Apr 2027 | £375 |
| 3 to 6 months late | 30 Apr 2027 to 29 Jul 2027 | £750 |
| More than 6 months late | From 30 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 30 Apr 2027 | £200 |
| 3 months late | 29 Jul 2027 | another £200 |
| 6 months late | 29 Oct 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 29 Apr 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
- 11312013
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 16 April 2018 (8 years ago)
- Registered office
- 12 Water End, Clifton, York, YO30 6LP
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 29 April (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 April 2025
- Last confirmation statement
- 15 April 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 York
Other active plumbing and heating companies registered in York.
- Stephenson Plumbing Services Ltd2019
- Stokes Renewable Solutions Ltd2024
- Subheat Limited2012
- SWS Air Conditioning Ltd2020
- T Wilcock Plumbing & Heating Ltd2019
- The Boiler Doctor York Limited2020
- Therm Control Ltd.2002
- Thomlinson Services (York) Limited2008
All plumbing and heating companies in York · All trades in York · Plumbers and heating engineers across the UK
Frequently asked questions
When are ST Energy Limited's accounts due?
ST Energy Limited's next accounts are due at Companies House by 29 January 2027 (in 108 days), covering the period to 29 April 2026.
When is ST Energy Limited's CT600 due?
The CT600 for the period to 29 April 2026 is due at HMRC by 29 April 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 30 January 2027.
Is ST Energy Limited still trading?
ST Energy Limited 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 ST Energy Limited do?
ST Energy Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is ST Energy Limited?
ST Energy Limited was incorporated on 16 April 2018, 8 years ago.
Who runs ST Energy Limited?
ST Energy Limited has 2 active directors, the longest-serving appointed in Apr 2018. Their names and service addresses are on the Companies House register.
Who owns ST Energy Limited?
2 people or companies have significant control of ST Energy Limited: an individual (owns 25% to 50% of the shares); an individual (owns 25% to 50% of the shares).
What is the penalty if ST Energy 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 ST Energy Limited 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.