Company profile · Plumbers and heating engineers
Tamvent Ltd
Tamvent Ltd is a 1-year-old private limited company registered in Stevenage, company number 16444794, one of 95 plumbing and heating companies in Stevenage. Its next accounts are due at Companies House on 12 February 2027, and its first CT600 is due at HMRC on 11 May 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.
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Where Tamvent Ltd is registered
The registered office is in Stevenage (SG1), in the North Hertfordshire local authority area, East of England. Show SG1 6AL on a map.
Other trade companies in SG1
- Masterplumbing&Heating LtdPlumbers and heating engineers
- Ohiggins Property Solutions LtdProperty developers
- Bird Detailing LtdCleaning companies
- Tedted Engineering LtdMechanics and garages
- DSS Facilities LtdFacilities management
- Macala Engineering LimitedSpecialist contractors
- Regency Detailing LtdMechanics and garages
- Ashtons Property Group LtdProperty developers
What happens if Tamvent 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 12 February 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 13 Feb 2027 to 12 Mar 2027 | £150 |
| 1 to 3 months late | 13 Mar 2027 to 12 May 2027 | £375 |
| 3 to 6 months late | 13 May 2027 to 12 Aug 2027 | £750 |
| More than 6 months late | From 13 Aug 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jun 2027 | £200 |
| 3 months late | 31 Aug 2027 | another £200 |
| 6 months late | 30 Nov 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 May 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
- 16444794
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 12 May 2025 (1 year ago)
- Registered office
- 3 Lowes Close, Stevenage, SG1 6AL
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 May (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 11 May 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 Stevenage
Other active plumbing and heating companies registered in Stevenage.
- Thomas & Son Plumbing & Heating Ltd2024
- Tibbys Aquastar Ltd2026
- Tyrer Plumbing & Heating Limited2022
- UK Ventilation Systems Ltd2019
- Vent Nest Limited2026
- VF Mechanical Ltd2014
- Vines Property Services Ltd2019
- Vital Plumbers Limited2011
All plumbing and heating companies in Stevenage · All trades in Stevenage · Plumbers and heating engineers across the UK
Frequently asked questions
When are Tamvent Ltd's accounts due?
Tamvent Ltd's next accounts are due at Companies House by 12 February 2027 (in 123 days), covering the period to 31 May 2026.
When is Tamvent 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 11 May 2026, due by 11 May 2027, and one for the period to 31 May 2026, due by 31 May 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Tamvent Ltd still trading?
Tamvent 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 Tamvent Ltd do?
Tamvent Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Tamvent Ltd?
Tamvent Ltd was incorporated on 12 May 2025, 1 year ago.
What is the penalty if Tamvent 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 Tamvent 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.