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- Beckenham
- Cornerstone Drainage Ltd
Company profile · Plumbers and heating engineers
Cornerstone Drainage Ltd
Cornerstone Drainage Ltd is a newly incorporated private limited company registered in Beckenham, company number 17003019, one of 35 plumbing and heating companies in Beckenham. Its next accounts are due at Companies House on 30 October 2027, and its first CT600 is due at HMRC on 29 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 Cornerstone Drainage Ltd is registered
The registered office is in Beckenham (BR3), in the Bromley local authority area, London. Show BR3 5DZ on a map.
Other trade companies in BR3
- Sxxiaoman LtdMotor traders
- Osiris Heating and Cooling LtdMachinery repair and installation
- Sundar Trade LimitedMotor traders
- Energy Planet UK LimitedMachinery repair and installation
- Hatchpro Marine Service LimitedMachinery repair and installation
- Towers Plumbing and Heating LtdPlumbers and heating engineers
- BG Facilities & Property LtdPainters and decorators
- Jad Motors London LimitedMechanics and garages
Also registered at this address
1 other company uses the same registered office as Cornerstone Drainage Ltd.
- Acz Plumbing & Leak Detection Specialists LtdPlumbers and heating engineers
What happens if Cornerstone Drainage 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 30 October 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 31 Oct 2027 to 30 Nov 2027 | £150 |
| 1 to 3 months late | 1 Dec 2027 to 30 Jan 2028 | £375 |
| 3 to 6 months late | 31 Jan 2028 to 30 Apr 2028 | £750 |
| More than 6 months late | From 1 May 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
- 17003019
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 30 January 2026
- Registered office
- 36 Lankton Close, Beckenham, BR3 5DZ
- 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 Beckenham
Other active plumbing and heating companies registered in Beckenham.
- Cosy Cat Plumbing & Heating Ltd2021
- DMB Heating Ltd2017
- Elmec UK Ltd2025
- Epml Limited2011
- Fitnfix Ltd2019
- Goci Plumbing Ltd2020
- Goldcrestworks Limited2022
- Holland Ductwork Services Ltd2024
All plumbing and heating companies in Beckenham · All trades in Beckenham · Plumbers and heating engineers across the UK
Frequently asked questions
When are Cornerstone Drainage Ltd's accounts due?
Cornerstone Drainage Ltd's next accounts are due at Companies House by 30 October 2027 (in 383 days), covering the period to 31 January 2027.
When is Cornerstone Drainage 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 29 January 2027, due by 29 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 Cornerstone Drainage Ltd still trading?
Cornerstone Drainage 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 Cornerstone Drainage Ltd do?
Cornerstone Drainage Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Cornerstone Drainage Ltd?
Cornerstone Drainage Ltd was incorporated on 30 January 2026, less than a year ago.
What is the penalty if Cornerstone Drainage 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 Cornerstone Drainage 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.