- Companies
- Plumbers and heating engineers
- Hull
- Flowmarsters Ltd
Flowmarsters Ltd
- Company number
- 16830860
- Incorporated
- 4 Nov 2025
- Registered office
- 1 Cradley Road, Hull, HU5 5SL
- Nature of business
- Plumbing, heat and air-conditioning installation
Flowmarsters Ltd is a newly incorporated private limited company registered in Hull, company number 16830860, one of 179 plumbing and heating companies in Hull. Its next accounts are due at Companies House on 4 August 2027, and its first CT600 is due at HMRC on 3 November 2027.
Key dates
This company has not filed accounts yet. First accounts are due 21 months after incorporation, and the first period can run longer than a year.
Is this your company?
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Where Flowmarsters Ltd is registered
The registered office is in Hull (HU5), in the Kingston upon Hull, City of local authority area, Yorkshire and The Humber. Show HU5 5SL on a map.
Other trade companies in HU5
- Alstrax LtdGroundworks and demolition
- Lydian Collective LtdPlasterers
- Pinnacle Properties Hull LtdBuilders
- The Bathroom Company (Hull) LtdPlumbers and heating engineers
- P Hemmo Property Management LtdProperty developers
- Viking Plumbing and Heating Hull LtdPlumbers and heating engineers
- Kalls Renewables LtdCivil engineering
- Fuse Electrical Yorkshire LimitedElectricians
What happens if Flowmarsters 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 4 August 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 5 Aug 2027 to 4 Sep 2027 | £150 |
| 1 to 3 months late | 5 Sep 2027 to 4 Nov 2027 | £375 |
| 3 to 6 months late | 5 Nov 2027 to 4 Feb 2028 | £750 |
| More than 6 months late | From 5 Feb 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Dec 2027 | £200 |
| 3 months late | 29 Feb 2028 | another £200 |
| 6 months late | 30 May 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Nov 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
- 16830860
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 4 November 2025
- Registered office
- 1 Cradley Road, Hull, HU5 5SL
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 30 November (accounting reference date)
- Accounts type
- No accounts filed yet
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 Hull
Other active plumbing and heating companies registered in Hull.
- Forty Acre Plumbing & Heating Limited2008
- G. and A. Plumbing Services Limited1999
- G.G.S. Gas Services Limited2008
- Gareth Owen Plumbing & Heating Limited2022
- Gas Water Renewable Solutions Ltd2026
- Gas Works (Hull) Limited2016
- Gastech Heating Solutions Ltd2026
- Hailstone Apex Mechanical Ltd2026
All plumbing and heating companies in Hull · All trades in Hull · Plumbers and heating engineers across the UK
Frequently asked questions
When are Flowmarsters Ltd's accounts due?
Flowmarsters Ltd's next accounts are due at Companies House by 4 August 2027 (in 296 days), covering the period to 30 November 2026.
When is Flowmarsters Ltd's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 3 November 2026, due by 3 November 2027, and one for the period to 30 November 2026, due by 30 November 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Flowmarsters Ltd still trading?
Flowmarsters 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 Flowmarsters Ltd do?
Flowmarsters Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Flowmarsters Ltd?
Flowmarsters Ltd was incorporated on 4 November 2025, less than a year ago.
What is the penalty if Flowmarsters 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 Flowmarsters 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.