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- Diamond Integration Limited
Company profile · Installers
Diamond Integration Limited
Diamond Integration Limited is a 7-year-old private limited company registered in Thornton Heath, company number 12067098, one of 12 installation companies (insulation, lifts, shutters and similar) in Thornton Heath. Its next accounts are due at Companies House on 30 April 2027, and the CT600 for the period to 31 July 2026 is due at HMRC on 31 July 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 July 2025, as filed at Companies House.
Diamond Integration Limited over the years
From each year's balance sheet filed at Companies House. Small companies do not have to publish turnover or profit, so these are balance sheet figures.
- Net assets down £98 (-39.2%) on the year before, to £152.
- Net assets rose in 3 of 5 year-on-year comparisons on record.
- Current assets of £17K against £17K owed within a year: 1.0 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 6 years, 2020 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Jul 2025 | £152 | £17K | £17K | 0 | |
| 31 Jul 2024 | £250 | £12K | £11K | 1 | |
| 31 Jul 2023 | £71 | £10K | £10K | 1 | |
| 31 Jul 2022 | £40 | £10K | £10K | 1 | |
| 30 Jun 2021 | £20 | £7,616 | £7,596 | 1 | |
| 30 Jun 2020 | £529 | £1,153 | £624 | 1 |
Who runs and owns Diamond Integration Limited
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officer
| Name | Role | Appointed |
|---|---|---|
| D*** A*** | Director | Jun 2019 |
Person with significant control
Where Diamond Integration Limited is registered
The registered office is in Thornton Heath (CR7), in the Croydon local authority area, London. Show CR7 8SE on a map.
Other trade companies in CR7
- Ib Air Conditioning LimitedPlumbers and heating engineers
- Gold Carpet Cleaning Services LtdCleaning companies
- Azad Auto LtdMechanics and garages
- Tota Steel LtdFinishing trades
- Survey Stream Property Services LtdFacilities management
- Saunders Mechanics LtdMechanics and garages
- SR Gas London LimitedPlumbers and heating engineers
- Prestige Auto Repair & Body Works LtdMechanics and garages
What happens if Diamond Integration 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 30 April 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 May 2027 to 31 May 2027 | £150 |
| 1 to 3 months late | 1 Jun 2027 to 31 Jul 2027 | £375 |
| 3 to 6 months late | 1 Aug 2027 to 31 Oct 2027 | £750 |
| More than 6 months late | From 1 Nov 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Aug 2027 | £200 |
| 3 months late | 31 Oct 2027 | another £200 |
| 6 months late | 31 Jan 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jul 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
- 12067098
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 24 June 2019 (7 years ago)
- Registered office
- 24 Talbot Road, Thornton Heath, CR7 8SE
- Nature of business
- Other construction installation (SIC 43290)
- Year end
- 31 July (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 July 2025
- Last confirmation statement
- 23 June 2026
Filing notes for installation companies (insulation, lifts, shutters and similar)
Installation companies (insulation, lifts, shutters, solar and similar) often buy stock and equipment up front, so stock at the year end and capital allowances both affect the tax bill.
Similar companies in Thornton Heath
Other active installation companies (insulation, lifts, shutters and similar) registered in Thornton Heath.
- Dreamnest Renovations Ltd2025
- Electrics London Limited2026
- Fire Service Ltd2022
- Five F Capital Composite Group Ltd2026
- Mido5 Limited2019
- NJ Infra Ltd2025
- Nme Lifts & Escalators Ltd2017
- Spaces Home Improvements Ltd2025
All installation companies (insulation, lifts, shutters and similar) in Thornton Heath · All trades in Thornton Heath · Installers across the UK
Frequently asked questions
When are Diamond Integration Limited's accounts due?
Diamond Integration Limited's next accounts are due at Companies House by 30 April 2027 (in 200 days), covering the period to 31 July 2026.
When is Diamond Integration Limited's CT600 due?
The CT600 for the period to 31 July 2026 is due at HMRC by 31 July 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 May 2027.
Is Diamond Integration Limited still trading?
Diamond Integration 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 Diamond Integration Limited do?
Diamond Integration Limited is registered under Other construction installation (SIC 43290).
How old is Diamond Integration Limited?
Diamond Integration Limited was incorporated on 24 June 2019, 7 years ago.
Who runs Diamond Integration Limited?
Diamond Integration Limited has 1 active director, the longest-serving appointed in Jun 2019. Their names and service addresses are on the Companies House register.
Who owns Diamond Integration Limited?
One person or company has significant control of Diamond Integration Limited: an individual (owns 75% or more of the shares).
What is the penalty if Diamond Integration 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 Diamond Integration 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.