- Companies
- Plumbers and heating engineers
- Rotherham
- Smart Flow Ltd
Smart Flow Ltd
- Company number
- 12334678
- Incorporated
- 26 Nov 20196 years trading
- Registered office
- P & N Accountants Ltd 18A Rother Court, Mangham Road, Rotherham, South Yorkshire, S62 6DR
- Nature of business
- Plumbing, heat and air-conditioning installation; Environmental consulting activities
Smart Flow Ltd is a 6-year-old private limited company registered in Rotherham, company number 12334678, one of 158 plumbing and heating companies in Rotherham. Its next accounts are due at Companies House on 31 October 2026, and the CT600 for the period to 31 January 2026 is due at HMRC on 31 January 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Where Smart Flow Ltd is registered
The registered office is in Rotherham (S62), in the Rotherham local authority area, Yorkshire and The Humber. Show S62 6DR on a map.
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What happens if Smart Flow 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 October 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Nov 2026 to 30 Nov 2026 | £150 |
| 1 to 3 months late | 1 Dec 2026 to 31 Jan 2027 | £375 |
| 3 to 6 months late | 1 Feb 2027 to 30 Apr 2027 | £750 |
| More than 6 months late | From 1 May 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Feb 2027 | £200 |
| 3 months late | 30 Apr 2027 | another £200 |
| 6 months late | 31 Jul 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jan 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
- 12334678
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 26 November 2019 (6 years ago)
- Registered office
- P & N Accountants Ltd 18A Rother Court, Mangham Road, Rotherham, South Yorkshire, S62 6DR
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
Environmental consulting activities (SIC 74901) - Year end
- 31 January (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 January 2025
- Last confirmation statement
- 29 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 Rotherham
Other active plumbing and heating companies registered in Rotherham.
- South Yorkshire Plumbing & Building Services Limited2011
- SRH Plumbing & Heating Ltd2018
- Stables Heating (Contractors) Limited1997
- Start to Finish Incorporated Limited2007
- Steve's Stoves & Home Improvements Ltd2021
- T M Plumbing and Heating Services Limited2022
- T S Plumbing & Heating (Yorkshire) Limited2022
- The Kool Air Company Ltd2025
All plumbing and heating companies in Rotherham · All trades in Rotherham · Plumbers and heating engineers across the UK
Frequently asked questions
When are Smart Flow Ltd's accounts due?
Smart Flow Ltd's next accounts are due at Companies House by 31 October 2026 (in 18 days), covering the period to 31 January 2026.
When is Smart Flow Ltd's CT600 due?
The CT600 for the period to 31 January 2026 is due at HMRC by 31 January 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 November 2026.
Is Smart Flow Ltd still trading?
Smart Flow 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 Flow Ltd do?
Smart Flow Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220); Environmental consulting activities (SIC 74901).
How old is Smart Flow Ltd?
Smart Flow Ltd was incorporated on 26 November 2019, 6 years ago.
What is the penalty if Smart Flow 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 Flow 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.