- Companies
- Cleaning companies
- Middlesbrough
- Diamondshield Ltd
Diamondshield Ltd
- Company number
- 17441744
- Incorporated
- 5 Sep 2026
- Registered office
- 51 Haddon Street, Middlesbrough, TS1 3JH
- Nature of business
- General cleaning of buildings
Diamondshield Ltd is a newly incorporated private limited company registered in Middlesbrough, company number 17441744, one of 111 cleaning companies in Middlesbrough. Its next accounts are due at Companies House on 5 June 2028, and its first CT600 is due at HMRC on 4 September 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 Diamondshield Ltd is registered
The registered office is in Middlesbrough (TS1), in the Middlesbrough local authority area, North East. Show TS1 3JH on a map.
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What happens if Diamondshield 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 5 June 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 6 Jun 2028 to 5 Jul 2028 | £150 |
| 1 to 3 months late | 6 Jul 2028 to 5 Sep 2028 | £375 |
| 3 to 6 months late | 6 Sep 2028 to 5 Dec 2028 | £750 |
| More than 6 months late | From 6 Dec 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Oct 2028 | £200 |
| 3 months late | 30 Dec 2028 | another £200 |
| 6 months late | 30 Mar 2029 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Sep 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
- 17441744
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 5 September 2026
- Registered office
- 51 Haddon Street, Middlesbrough, TS1 3JH
- Nature of business
- General cleaning of buildings (SIC 81210)
- Year end
- 30 September (accounting reference date)
- Accounts type
- No accounts filed yet
Filing notes for cleaning companies
Cleaning companies are often staff-heavy, so wages, pension contributions and the employment allowance all show up in the accounts.
Similar companies in Middlesbrough
Other active cleaning companies registered in Middlesbrough.
- DN Joinery & Bathrooms Ltd2017
- Done 'N' Dusted Cleaning Ltd2009
- Done N Dusted Commercial Cleaning Ltd2024
- Efwan Ltd2026
- Eshark Global Ltd2026
- Eurovent HVAC Solutions Ltd2019
- F & A Cleaning Ltd2022
- Fabian Cleaning Ltd2016
All cleaning companies in Middlesbrough · All trades in Middlesbrough · Cleaning companies across the UK
Frequently asked questions
When are Diamondshield Ltd's accounts due?
Diamondshield Ltd's next accounts are due at Companies House by 5 June 2028 (in 602 days), covering the period to 30 September 2027.
When is Diamondshield 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 4 September 2027, due by 4 September 2028, and one for the period to 30 September 2027, due by 30 September 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is Diamondshield Ltd still trading?
Diamondshield 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 Diamondshield Ltd do?
Diamondshield Ltd is registered under General cleaning of buildings (SIC 81210).
How old is Diamondshield Ltd?
Diamondshield Ltd was incorporated on 5 September 2026, less than a year ago.
What is the penalty if Diamondshield 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 Diamondshield 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.