- Companies
- Plumbers and heating engineers
- London
- Diamond Cleaning and Maintenance Solutions Ltd
Diamond Cleaning and Maintenance Solutions Ltd
- Company number
- 16811836
- Incorporated
- 27 Oct 2025
- Registered office
- 809 Salisbury House, 29 Finsbury Circus, London, EC2M 7AQ
- Nature of business
- Plumbing, heat and air-conditioning installation; Other building completion and finishing; General cleaning of buildings; Other cleaning services
Diamond Cleaning and Maintenance Solutions Ltd is a newly incorporated private limited company registered in London, company number 16811836, one of 2,972 plumbing and heating companies in London. Its next accounts are due at Companies House on 27 July 2027, and its first CT600 is due at HMRC on 26 October 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.
Is this your company?
File the first accounts to Companies House and the CT600 to HMRC yourself with A.X.E.L Filing. One set of questions, both filings, £49 flat. No accountant, no subscription.
File for Diamond Cleaning and Maintenance Solutions LtdOr get a reminder before each deadline
Free. We email you 60, 30, 14, 7 and 1 days before the accounts, CT600 and confirmation statement are due. Unsubscribe in one click.
Where Diamond Cleaning and Maintenance Solutions Ltd is registered
The registered office is in London (EC2M), in the City of London local authority area, London. Show EC2M 7AQ on a map.
Other trade companies in EC2M
- Dwarrowdelf LtdCivil engineering
- Ijm (Paddington) LimitedProperty developers
- Floe Group LtdPlumbers and heating engineers
- Butts Ultra Group LimitedGroundworks and demolition
- Ink's Portfolio LtdFinishing trades
- Senno Property 1 LimitedProperty developers
- Senno Holding LimitedProperty developers
- Captpower Services LtdMachinery repair and installation
Shared registered office
41 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 Diamond Cleaning and Maintenance Solutions 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 27 July 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 28 Jul 2027 to 27 Aug 2027 | £150 |
| 1 to 3 months late | 28 Aug 2027 to 27 Oct 2027 | £375 |
| 3 to 6 months late | 28 Oct 2027 to 27 Jan 2028 | £750 |
| More than 6 months late | From 28 Jan 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Nov 2027 | £200 |
| 3 months late | 31 Jan 2028 | another £200 |
| 6 months late | 30 Apr 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Oct 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
- 16811836
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 27 October 2025
- Registered office
- 809 Salisbury House, 29 Finsbury Circus, London, EC2M 7AQ
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
Other building completion and finishing (SIC 43390)
General cleaning of buildings (SIC 81210)
Other cleaning services (SIC 81299) - Year end
- 31 October (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 London
Other active plumbing and heating companies registered in London.
- Diamond Gas Ltd2022
- Diamond Plumb Limited2004
- Diamond Plumbers Limited2020
- Diaz Plumbing Ltd2025
- Dibfix Ltd2025
- Dida Plumbing Ltd2026
- Dilano's Construction Ltd2026
- Direct Gas Utilities Ltd2023
All plumbing and heating companies in London · All trades in London · Plumbers and heating engineers across the UK
Frequently asked questions
When are Diamond Cleaning and Maintenance Solutions Ltd's accounts due?
Diamond Cleaning and Maintenance Solutions Ltd's next accounts are due at Companies House by 27 July 2027 (in 287 days), covering the period to 31 October 2026.
When is Diamond Cleaning and Maintenance Solutions 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 26 October 2026, due by 26 October 2027, and one for the period to 31 October 2026, due by 31 October 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Diamond Cleaning and Maintenance Solutions Ltd still trading?
Diamond Cleaning and Maintenance Solutions 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 Diamond Cleaning and Maintenance Solutions Ltd do?
Diamond Cleaning and Maintenance Solutions Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220); Other building completion and finishing (SIC 43390); General cleaning of buildings (SIC 81210); Other cleaning services (SIC 81299).
How old is Diamond Cleaning and Maintenance Solutions Ltd?
Diamond Cleaning and Maintenance Solutions Ltd was incorporated on 27 October 2025, less than a year ago.
What is the penalty if Diamond Cleaning and Maintenance Solutions 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 Diamond Cleaning and Maintenance Solutions 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.