- Companies
- Plumbers and heating engineers
- Southampton
- Flow Tech Drainage Limited
Flow Tech Drainage Limited
- Company number
- 15545413
- Incorporated
- 7 Mar 20242 years trading
- Registered office
- Roxan Business Centre, 142 Lodge Road, Southampton, SO14 6QR
- Nature of business
- Plumbing, heat and air-conditioning installation
Flow Tech Drainage Limited is a 2-year-old private limited company registered in Southampton, company number 15545413, one of 246 plumbing and heating companies in Southampton. 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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Financial snapshot, 2025
From the balance sheet at 31 March 2025, as filed at Companies House.
Where Flow Tech Drainage Limited is registered
The registered office is in Southampton (SO14), in the Southampton local authority area, South East. Show SO14 6QR on a map.
Other trade companies in SO14
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- Sonix LtdBuilders
- Vanie & Dick LtdBuilders
- 33 Motors LtdMotor traders
- Pure Light Cleaning LtdCleaning companies
- Cccjr Trading LimitedMotor traders
- Otess LtdFloor and wall tilers
- Bevertex LimitedElectricians
Also registered at this address
8 other companies use the same registered office as Flow Tech Drainage Limited.
- Eclipse Cleaning Contractors LimitedCleaning companies
- Hampshire Tree & Landscapes LimitedLandscapers and gardeners
- J Atkins Carpentry and Joinery LtdFinishing trades
- Military Precision Pest Control LtdCleaning companies
- Reader Fabrication LimitedMachinery repair and installation
- Roxan Construction LimitedProperty developers
- Russell Drainage Services LimitedPlumbers and heating engineers
- Talisman Tree Care LimitedLandscapers and gardeners
What happens if Flow Tech Drainage 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 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
- 15545413
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 7 March 2024 (2 years ago)
- Registered office
- Roxan Business Centre, 142 Lodge Road, Southampton, SO14 6QR
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 6 March 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 Southampton
Other active plumbing and heating companies registered in Southampton.
- Focal Heat Ltd2024
- Forest Plumbing & Heating Limited2014
- Fox HVAC Ltd2018
- Gas and Water Experts Limited2023
- Gas Bright Limited2021
- Gasnier Plumbing & Heating Limited2006
- Gaswarm Heating and Mechanical Ltd2018
- GHP South Ltd2017
All plumbing and heating companies in Southampton · All trades in Southampton · Plumbers and heating engineers across the UK
Frequently asked questions
When are Flow Tech Drainage Limited's accounts due?
Flow Tech Drainage Limited's next accounts are due at Companies House by 31 December 2026 (in 80 days), covering the period to 31 March 2026.
When is Flow Tech Drainage Limited'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 Flow Tech Drainage Limited still trading?
Flow Tech Drainage 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 Flow Tech Drainage Limited do?
Flow Tech Drainage Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Flow Tech Drainage Limited?
Flow Tech Drainage Limited was incorporated on 7 March 2024, 2 years ago.
What is the penalty if Flow Tech Drainage 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 Flow Tech Drainage 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.