- Companies
- Plumbers and heating engineers
- Aylesbury
- Smi Plumbing and Heating Ltd
Smi Plumbing and Heating Ltd
- Company number
- 15212202
- Incorporated
- 16 Oct 20232 years trading
- Registered office
- 19 Comet Way, Aylesbury, Buckinghamshire, HP18 1AJ
- Nature of business
- Plumbing, heat and air-conditioning installation
Smi Plumbing and Heating Ltd is a 2-year-old private limited company registered in Aylesbury, company number 15212202, one of 119 plumbing and heating companies in Aylesbury. Its next accounts are due at Companies House on 31 July 2027, and the CT600 for the period to 31 October 2026 is due at HMRC on 31 October 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 £7,363 (+115.6%) on the year before, to £14K.
- Current assets of £11K against £1,847 owed within a year: 5.7 times cover.
- 2 employees on average, up from 1 the year before.
- Balance sheets on record for 2 years, 2024 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Oct 2025 | £14K | £11K | £1,847 | 2 | |
| 31 Oct 2024 | £6,369 | £5,365 | £3,996 | 1 |
Where Smi Plumbing and Heating Ltd is registered
The registered office is in Aylesbury (HP18), in the Buckinghamshire local authority area, South East. Show HP18 1AJ on a map.
Other trade companies in HP18
- Panels and Piers Building and Renovation LtdProperty developers
- Aylesbury Drainage Services LtdPlumbers and heating engineers
- Firmus Roofing and Building LtdRoofers
- Cris Global LtdMotor traders
- Peek LtdMotor traders
- MDP Plumbing LtdPlumbers and heating engineers
- Experion Decorations LtdPainters and decorators
- Vertex Modular LtdBuilders
What happens if Smi Plumbing and Heating 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 July 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Aug 2027 to 31 Aug 2027 | £150 |
| 1 to 3 months late | 1 Sep 2027 to 31 Oct 2027 | £375 |
| 3 to 6 months late | 1 Nov 2027 to 31 Jan 2028 | £750 |
| More than 6 months late | From 1 Feb 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Nov 2027 | £200 |
| 3 months late | 31 Jan 2028 | another £200 |
| 6 months late | 30 Apr 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Oct 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
- 15212202
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 16 October 2023 (2 years ago)
- Registered office
- 19 Comet Way, Aylesbury, Buckinghamshire, HP18 1AJ
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 October (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 October 2025
- Last confirmation statement
- 15 October 2025
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 Aylesbury
Other active plumbing and heating companies registered in Aylesbury.
- SN Plumbing Solutions Ltd2023
- STP Plumbing & Heating Ltd2023
- Surab Limited1995
- Three Counties Plumbing Ltd2006
- Tobias James Installations Ltd2014
- Total Water Limited2022
- Tskgasservices Ltd2020
- Tyrone Andrew Bennett Ltd2025
All plumbing and heating companies in Aylesbury · All trades in Aylesbury · Plumbers and heating engineers across the UK
Frequently asked questions
When are Smi Plumbing and Heating Ltd's accounts due?
Smi Plumbing and Heating Ltd's next accounts are due at Companies House by 31 July 2027 (in 291 days), covering the period to 31 October 2026.
When is Smi Plumbing and Heating Ltd's CT600 due?
The CT600 for the period to 31 October 2026 is due at HMRC by 31 October 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 August 2027.
Is Smi Plumbing and Heating Ltd still trading?
Smi Plumbing and Heating 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 Smi Plumbing and Heating Ltd do?
Smi Plumbing and Heating Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Smi Plumbing and Heating Ltd?
Smi Plumbing and Heating Ltd was incorporated on 16 October 2023, 2 years ago.
What is the penalty if Smi Plumbing and Heating 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 Smi Plumbing and Heating 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.