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- Protank Waterproofing Ltd
Company profile · Specialist contractors
Protank Waterproofing Ltd
Protank Waterproofing Ltd is a 1-year-old private limited company registered in Leeds, company number 16241383, one of 356 specialist construction companies in Leeds. Its next accounts are due at Companies House on 10 November 2026, and its first CT600 is due at HMRC on 9 February 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 Protank Waterproofing Ltd is registered
The registered office is in Leeds (LS17), in the North Yorkshire local authority area, Yorkshire and The Humber. Show LS17 0EJ on a map.
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What happens if Protank Waterproofing 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 10 November 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 11 Nov 2026 to 10 Dec 2026 | £150 |
| 1 to 3 months late | 11 Dec 2026 to 10 Feb 2027 | £375 |
| 3 to 6 months late | 11 Feb 2027 to 10 May 2027 | £750 |
| More than 6 months late | From 11 May 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Mar 2027 | £200 |
| 3 months late | 28 May 2027 | another £200 |
| 6 months late | 28 Aug 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 28 Feb 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
- 16241383
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 10 February 2025 (1 year ago)
- Registered office
- Wescoe View Crag Lane, Huby, Leeds, LS17 0EJ
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 28 February (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 9 February 2026
Filing notes for specialist construction companies
Specialist contractors often work under CIS for main contractors. Retentions held back by the customer still count towards turnover once the work is done.
Similar companies in Leeds
Other active specialist construction companies registered in Leeds.
- Protech Roofing Limited2001
- Protier Limited1978
- PSB Construction Services Ltd2022
- Pudsey Precast Limited2007
- Quality Security Services Limited2010
- R B E Site Services Limited1995
- R Hartley Interiors Ltd2024
- R Watson Garage Doors Ltd2026
All specialist construction companies in Leeds · All trades in Leeds · Specialist contractors across the UK
Frequently asked questions
When are Protank Waterproofing Ltd's accounts due?
Protank Waterproofing Ltd's next accounts are due at Companies House by 10 November 2026 (in 29 days), covering the period to 28 February 2026.
When is Protank Waterproofing 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 9 February 2026, due by 9 February 2027, and one for the period to 28 February 2026, due by 28 February 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Protank Waterproofing Ltd still trading?
Protank Waterproofing 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 Protank Waterproofing Ltd do?
Protank Waterproofing Ltd is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Protank Waterproofing Ltd?
Protank Waterproofing Ltd was incorporated on 10 February 2025, 1 year ago.
What is the penalty if Protank Waterproofing 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 Protank Waterproofing 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.