- Company number
- 10162192
- Incorporated
- 4 May 201610 years trading
- Registered office
- Studio 65, Magna Lane, Rotherham, South Yorkshire, S65 4HH
- Nature of business
- Construction of domestic buildings
Smart Heating UK (North) Ltd is a 10-year-old private limited company registered in Rotherham, company number 10162192, one of 222 building contractors in Rotherham. Its next accounts are due at Companies House on 31 December 2026, and the CT600 for the period to 31 March 2026 is due at HMRC on 31 March 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 £1,746 (+4.4%) on the year before, to £41K.
- Net assets rose in 7 of 8 year-on-year comparisons on record.
- Current assets of £61K against £13K owed within a year: 4.8 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 9 years, 2017 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | £41K | £61K | £13K | 1 | |
| 31 Mar 2024 | £39K | £67K | £19K | 1 | |
| 31 Mar 2023 | £25K | £57K | £12K | 1 | |
| 31 Mar 2022 | £17K | £49K | £6,445 | 1 | |
| 31 Mar 2021 | £13K | £57K | £13K | 2 | |
| 31 Mar 2020 | £8,680 | £24K | £15K | 2 | |
| 31 May 2019 | £13K | £16K | £27K | £14K | 2 |
| 31 May 2018 | £12K | £17K | £5,326 | 1 | |
| 31 May 2017 | £7,712 | £15K | £7,342 | 0 |
Where Smart Heating UK (North) Ltd is registered
The registered office is in Rotherham (S65), in the Rotherham local authority area, Yorkshire and The Humber. Show S65 4HH on a map.
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What happens if Smart Heating UK (North) 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 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- 10162192
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 4 May 2016 (10 years ago)
- Registered office
- Studio 65, Magna Lane, Rotherham, South Yorkshire, S65 4HH
- Nature of business
- Construction of domestic buildings (SIC 41202)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 3 May 2026
- Previous names
- Kam Plumbing & Heating Services Ltd (until 23 Jun 2022)
Filing notes for building contractors
Building companies often run the Construction Industry Scheme as a contractor, a subcontractor or both. CIS deductions suffered during the year are set against the PAYE bill, and any unrecovered balance at the year end matters when the accounts are drawn up.
Similar companies in Rotherham
Other active building contractors registered in Rotherham.
- SMW Construction Services Ltd2024
- South Yorkshire Systems Ltd2021
- Springwood Property Services Ltd2026
- SRM Constructors Limited2021
- Staniforth Developments Ltd2018
- Stapleton Building Ltd2022
- Steel Tech Solutions Limited2016
- Sterling Struct Ltd2026
All building contractors in Rotherham · All trades in Rotherham · Builders across the UK
Frequently asked questions
When are Smart Heating UK (North) Ltd's accounts due?
Smart Heating UK (North) Ltd's next accounts are due at Companies House by 31 December 2026 (in 79 days), covering the period to 31 March 2026.
When is Smart Heating UK (North) Ltd's CT600 due?
The CT600 for the period to 31 March 2026 is due at HMRC by 31 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2027.
Is Smart Heating UK (North) Ltd still trading?
Smart Heating UK (North) 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 Smart Heating UK (North) Ltd do?
Smart Heating UK (North) Ltd is registered under Construction of domestic buildings (SIC 41202).
How old is Smart Heating UK (North) Ltd?
Smart Heating UK (North) Ltd was incorporated on 4 May 2016, 10 years ago.
What is the penalty if Smart Heating UK (North) 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 Smart Heating UK (North) 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.