- Companies
- Plumbers and heating engineers
- Mildenhall
- London Drainage Co Limited
London Drainage Co Limited
- Company number
- 15806428
- Incorporated
- 27 Jun 20242 years trading
- Registered office
- 82A James Carter Road, Mildenhall, IP28 7DE
- Nature of business
- Plumbing, heat and air-conditioning installation
London Drainage Co Limited is a 2-year-old private limited company registered in Mildenhall, company number 15806428, one of 23 plumbing and heating companies in Mildenhall. Its next accounts are due at Companies House on 31 March 2027, and the CT600 for the period to 30 June 2026 is due at HMRC on 30 June 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 30 June 2025, as filed at Companies House.
Where London Drainage Co Limited is registered
The registered office is in Mildenhall (IP28), in the West Suffolk local authority area, East of England. Show IP28 7DE on a map.
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- Rowley Construction Solutions LtdBuilders
- Palatone LtdRepair services
- Local Roofing N Chimneys LimitedRoofers
- SC Joinery and Building Solutions LtdBuilders
- Scuffiq LtdMechanics and garages
- DG Classic Cars LtdMotor traders
- E.B. Fitch Historic Buildings Specialists LtdPainters and decorators
Shared registered office
459 companies on our pages use this registered office address. An address shared this widely is usually an accountant's office or a company formation agent's service address, not where the business trades from.
What happens if London Drainage Co 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 March 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Apr 2027 to 30 Apr 2027 | £150 |
| 1 to 3 months late | 1 May 2027 to 30 Jun 2027 | £375 |
| 3 to 6 months late | 1 Jul 2027 to 30 Sep 2027 | £750 |
| More than 6 months late | From 1 Oct 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jul 2027 | £200 |
| 3 months late | 30 Sep 2027 | another £200 |
| 6 months late | 30 Dec 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Jun 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
- 15806428
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 27 June 2024 (2 years ago)
- Registered office
- 82A James Carter Road, Mildenhall, IP28 7DE
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 30 June (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 June 2025
- Last confirmation statement
- 26 June 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 Mildenhall
Other active plumbing and heating companies registered in Mildenhall.
- MB Total Property Services Ltd2025
- Morenew Solutions Ltd2026
- Neat Heat Services Ltd2017
- Onnes Ltd2026
- Penguin Homes Group Ltd2025
- Phoenix Heating and Plumbing Ltd2024
- Sentry Heat Ltd2025
- UK Climate Control Ltd2026
All plumbing and heating companies in Mildenhall · All trades in Mildenhall · Plumbers and heating engineers across the UK
Frequently asked questions
When are London Drainage Co Limited's accounts due?
London Drainage Co Limited's next accounts are due at Companies House by 31 March 2027 (in 169 days), covering the period to 30 June 2026.
When is London Drainage Co Limited's CT600 due?
The CT600 for the period to 30 June 2026 is due at HMRC by 30 June 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 April 2027.
Is London Drainage Co Limited still trading?
London Drainage Co 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 London Drainage Co Limited do?
London Drainage Co Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is London Drainage Co Limited?
London Drainage Co Limited was incorporated on 27 June 2024, 2 years ago.
What is the penalty if London Drainage Co 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 London Drainage Co 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.