- Companies
- Plumbers and heating engineers
- Horsham
- South East Tank Masters Limited
South East Tank Masters Limited
- Company number
- 16989337
- Incorporated
- 26 Jan 2026
- Registered office
- 11 Blunts Way, Horsham, RH12 2BJ
- Nature of business
- Plumbing, heat and air-conditioning installation
South East Tank Masters Limited is a newly incorporated private limited company registered in Horsham, company number 16989337, one of 57 plumbing and heating companies in Horsham. Its next accounts are due at Companies House on 26 October 2027, and its first CT600 is due at HMRC on 25 January 2028.
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 South East Tank Masters Limited is registered
The registered office is in Horsham (RH12), in the Horsham local authority area, South East. Show RH12 2BJ on a map.
Other trade companies in RH12
- Ravenscroft Design LtdBuilders
- Greenblade Group LtdLandscapers and gardeners
- Carter Cook Construction LimitedProperty developers
- RN Property Solution LtdFinishing trades
- Bell & Son Construction LtdProperty developers
- Ihk Automotive LtdMechanics and garages
- Bubberts Cleaning Partnership LtdCleaning companies
- TD Garden Maintenance LtdLandscapers and gardeners
What happens if South East Tank Masters 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 26 October 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 27 Oct 2027 to 26 Nov 2027 | £150 |
| 1 to 3 months late | 27 Nov 2027 to 26 Jan 2028 | £375 |
| 3 to 6 months late | 27 Jan 2028 to 26 Apr 2028 | £750 |
| More than 6 months late | From 27 Apr 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Feb 2028 | £200 |
| 3 months late | 30 Apr 2028 | another £200 |
| 6 months late | 31 Jul 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jan 2029 | 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
- 16989337
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 26 January 2026
- Registered office
- 11 Blunts Way, Horsham, RH12 2BJ
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 January (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 Horsham
Other active plumbing and heating companies registered in Horsham.
- Southwater Plumbing & Heating Ltd2023
- SPR Heating Limited2021
- Surrey & Sussex Heating Ltd2023
- Sussex and Surrey Central Heating Services Ltd2020
- Tfy Plumbing and Maintenance Ltd2021
- Truetemp HVAC Ltd2025
- Wilkins Heating Ltd2025
- Ymec Facilities Ltd2018
All plumbing and heating companies in Horsham · All trades in Horsham · Plumbers and heating engineers across the UK
Frequently asked questions
When are South East Tank Masters Limited's accounts due?
South East Tank Masters Limited's next accounts are due at Companies House by 26 October 2027 (in 378 days), covering the period to 31 January 2027.
When is South East Tank Masters Limited's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 25 January 2027, due by 25 January 2028, and one for the period to 31 January 2027, due by 31 January 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is South East Tank Masters Limited still trading?
South East Tank Masters 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 South East Tank Masters Limited do?
South East Tank Masters Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is South East Tank Masters Limited?
South East Tank Masters Limited was incorporated on 26 January 2026, less than a year ago.
What is the penalty if South East Tank Masters 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 South East Tank Masters 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.