- Companies
- Specialist contractors
- Ruislip
- Diamondthrust Limited
Diamondthrust Limited
- Company number
- 02172777
- Incorporated
- 30 Sep 198739 years trading
- Registered office
- First Floor, Jebsen House, 53-61 High Street, Ruislip, Middlesex, HA4 7BD
- Nature of business
- Other specialised construction activities n.e.c.
Diamondthrust Limited is a 39-year-old private limited company registered in Ruislip, company number 02172777, one of 107 specialist construction companies in Ruislip. Its next accounts are due at Companies House on 31 December 2026, and its first CT600 is due at HMRC on 31 December 2026.
Key dates
Worked out from the year end and filing history on the Companies House register.
Is this your company?
File the 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 Diamondthrust LimitedOr 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.
Finances
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 up £470 (+53%) on the year before, to £1,357.
- Net assets rose in 1 of 9 year-on-year comparisons on record.
- Current assets of £61K against £60K owed within a year: 1.0 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 10 years, 2015 to 2024.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Dec 2024 | £1,357 | £61K | £61K | £60K | 2 |
| 31 Dec 2023 | £887 | £60K | £60K | £60K | 2 |
| 31 Dec 2022 | £29K | £148K | £148K | £119K | 2 |
| 31 Dec 2021 | £67K | £164K | £164K | £97K | 2 |
| 31 Dec 2020 | £104K | £167K | £167K | £63K | 2 |
| 31 Dec 2019 | £127K | £167K | £168K | £40K | 2 |
| 31 Dec 2018 | £138K | £169K | £169K | £31K | 2 |
| 31 Dec 2017 | £166K | £296K | £296K | £130K | 2 |
| 31 Dec 2016 | £191K | £296K | £297K | £106K | 2 |
| 31 Dec 2015 | £215K | £296K | £297K | £82K |
Where Diamondthrust Limited is registered
The registered office is in Ruislip (HA4), in the Hillingdon local authority area, London. Show HA4 7BD on a map.
Other trade companies in HA4
- SSC London LtdGroundworks and demolition
- DCR Industriltdal LtdPainters and decorators
- Katardino Monten for General Contracting and Supplies LtdCivil engineering
- Apex Build & Move LtdBuilders
- Ridgeway Building Contracts LimitedProperty developers
- Azya Farah LtdBuilders
- Howdens Roofing & Guttering LimitedRoofers
- Vetro Glazing LimitedGlaziers
Also registered at this address
7 other companies use the same registered office as Diamondthrust Limited.
- Amek Electrical Services LimitedElectricians
- Bentley Property Developments LimitedProperty developers
- Clipston Project Management LimitedSpecialist contractors
- Hiruma Investment LimitedProperty developers
- Hiruma Overseas Corporation (U.K.) LimitedProperty developers
- Independent Investments LimitedProperty developers
- J Morris & Sons LimitedPlumbers and heating engineers
What happens if Diamondthrust 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 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- 02172777
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 30 September 1987 (39 years ago)
- Registered office
- First Floor, Jebsen House, 53-61 High Street, Ruislip, Middlesex, HA4 7BD
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 31 December (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 December 2024
- Last confirmation statement
- 15 May 2026
Filing notes for specialist construction companies
Specialist contractors often work under CIS for main contractors. Retentions held back by the customer still count towards turnover once the work is done.
Similar companies in Ruislip
Other active specialist construction companies registered in Ruislip.
- DR Construction and Maintenance Services Limited2015
- Driveline Paving Limited2011
- Drivestone Limited2017
- DSLP Limited2025
- Ela Merite Solutions Ltd2015
- Emis Construct Ltd2019
- Es UK Services Ltd2022
- Euro Steel Stock Holders Ltd2018
All specialist construction companies in Ruislip · All trades in Ruislip · Specialist contractors across the UK
Frequently asked questions
When are Diamondthrust Limited's accounts due?
Diamondthrust Limited's next accounts are due at Companies House by 31 December 2026 (in 80 days), covering the period to 31 March 2026.
When is Diamondthrust Limited's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 31 December 2025, due by 31 December 2026, and one for the period to 31 March 2026, due by 31 March 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Diamondthrust Limited still trading?
Diamondthrust 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 Diamondthrust Limited do?
Diamondthrust Limited is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Diamondthrust Limited?
Diamondthrust Limited was incorporated on 30 September 1987, 39 years ago.
What is the penalty if Diamondthrust 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 Diamondthrust 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.