- Companies
- Plumbers and heating engineers
- Edgware
- SDG Hydronics Ltd
SDG Hydronics Ltd
- Company number
- 15551530
- Incorporated
- 9 Mar 20242 years trading
- Registered office
- Flat 26 Cohen Court, 5 Burnt Oak Broadway, Edgware, HA8 5FB
- Nature of business
- Plumbing, heat and air-conditioning installation; Management consultancy activities other than financial management; Other engineering activities
SDG Hydronics Ltd is a 2-year-old private limited company registered in Edgware, company number 15551530, one of 70 plumbing and heating companies in Edgware. Its next accounts are due at Companies House on 31 December 2026, and the CT600 for the period to 31 March 2026 is due at HMRC on 31 March 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Financial snapshot, 2025
From the balance sheet at 31 March 2025, as filed at Companies House.
Where SDG Hydronics Ltd is registered
The registered office is in Edgware (HA8), in the Brent local authority area, London. Show HA8 5FB on a map.
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- C&I Building Solutions LtdBuilders
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What happens if SDG Hydronics 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 31 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- 15551530
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 9 March 2024 (2 years ago)
- Registered office
- Flat 26 Cohen Court, 5 Burnt Oak Broadway, Edgware, HA8 5FB
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
Management consultancy activities other than financial management (SIC 70229)
Other engineering activities (SIC 71129) - Year end
- 31 March (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 8 March 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 Edgware
Other active plumbing and heating companies registered in Edgware.
- Shuhrat Abdulloev Limited2021
- Simon Plumbing Ltd2026
- Smart Amenity Ltd2016
- Snug & Chill Limited2014
- Swerdna Services Limited2007
- Totalcare Homes Ltd2025
- Vala Services Ltd2019
- Velco Proheating Ltd2018
All plumbing and heating companies in Edgware · All trades in Edgware · Plumbers and heating engineers across the UK
Frequently asked questions
When are SDG Hydronics Ltd's accounts due?
SDG Hydronics Ltd's next accounts are due at Companies House by 31 December 2026 (in 79 days), covering the period to 31 March 2026.
When is SDG Hydronics Ltd's CT600 due?
The CT600 for the period to 31 March 2026 is due at HMRC by 31 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2027.
Is SDG Hydronics Ltd still trading?
SDG Hydronics 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 SDG Hydronics Ltd do?
SDG Hydronics Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220); Management consultancy activities other than financial management (SIC 70229); Other engineering activities (SIC 71129).
How old is SDG Hydronics Ltd?
SDG Hydronics Ltd was incorporated on 9 March 2024, 2 years ago.
What is the penalty if SDG Hydronics 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 SDG Hydronics 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.