- Companies
- Plumbers and heating engineers
- Sidcup
- Tettmar Water and Gas Limited
Tettmar Water and Gas Limited
- Company number
- 14811500
- Incorporated
- 18 Apr 20233 years trading
- Registered office
- 88 Harland Avenue, Sidcup, DA15 7PQ
- Nature of business
- Plumbing, heat and air-conditioning installation
Tettmar Water and Gas Limited is a 3-year-old private limited company registered in Sidcup, company number 14811500, one of 101 plumbing and heating companies in Sidcup. Its next accounts are due at Companies House on 31 January 2027, and the CT600 for the period to 30 April 2026 is due at HMRC on 30 April 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Finances
From each year's balance sheet filed at Companies House. Small companies do not have to publish turnover or profit, so these are balance sheet figures.
- Net assets down £588 (-28%) on the year before, to £1,510.
- Current assets of £36K against £33K owed within a year: 1.1 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 2 years, 2024 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Apr 2025 | £1,510 | £6,870 | £36K | £33K | 1 |
| 30 Apr 2024 | £2,098 | £13K | £9,021 | 1 |
Where Tettmar Water and Gas Limited is registered
The registered office is in Sidcup (DA15), in the Bexley local authority area, London. Show DA15 7PQ on a map.
Other trade companies in DA15
- Petrichor Gardens LtdLandscapers and gardeners
- J Kennor Plumbing LimitedPlumbers and heating engineers
- Buckson Property Maintenance LtdElectricians
- MN Cooper UK LtdMotor traders
- Husband at Home LtdInstallers
- First Choice Cars LDN LtdMotor traders
- TSLM Electrical Contractors LtdElectricians
- Airhaus LtdPlumbers and heating engineers
What happens if Tettmar Water and Gas 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 January 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Feb 2027 to 28 Feb 2027 | £150 |
| 1 to 3 months late | 1 Mar 2027 to 30 Apr 2027 | £375 |
| 3 to 6 months late | 1 May 2027 to 31 Jul 2027 | £750 |
| More than 6 months late | From 1 Aug 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 May 2027 | £200 |
| 3 months late | 30 Jul 2027 | another £200 |
| 6 months late | 30 Oct 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Apr 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
- 14811500
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 18 April 2023 (3 years ago)
- Registered office
- 88 Harland Avenue, Sidcup, DA15 7PQ
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 30 April (accounting reference date)
- Accounts type
- Unaudited abridged
- Last accounts made up to
- 30 April 2025
- Last confirmation statement
- 2 April 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 Sidcup
Other active plumbing and heating companies registered in Sidcup.
- TFJ Gas & Heating Ltd2024
- TG Plumbing Ltd2025
- The Oil Fired Cooking and Heating Co Limited2019
- Trotters Independent Tradesmen Ltd2013
- Ukb (London) Limited2019
- Vellatec Limited2017
- Walsh Air Conditioning Limited2014
- Wilson & Sons Plumbing Limited2019
All plumbing and heating companies in Sidcup · All trades in Sidcup · Plumbers and heating engineers across the UK
Frequently asked questions
When are Tettmar Water and Gas Limited's accounts due?
Tettmar Water and Gas Limited's next accounts are due at Companies House by 31 January 2027 (in 110 days), covering the period to 30 April 2026.
When is Tettmar Water and Gas Limited's CT600 due?
The CT600 for the period to 30 April 2026 is due at HMRC by 30 April 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 February 2027.
Is Tettmar Water and Gas Limited still trading?
Tettmar Water and Gas 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 Tettmar Water and Gas Limited do?
Tettmar Water and Gas Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Tettmar Water and Gas Limited?
Tettmar Water and Gas Limited was incorporated on 18 April 2023, 3 years ago.
What is the penalty if Tettmar Water and Gas 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 Tettmar Water and Gas 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.