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- Corrundum Construction Limited
Company profile · Finishing trades
Corrundum Construction Limited
Corrundum Construction Limited is a 25-year-old private limited company registered in Harrow, company number 04100768, one of 251 building finishing companies in Harrow. Its next accounts are due at Companies House on 31 August 2027, and the CT600 for the period to 30 November 2026 is due at HMRC on 30 November 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 30 November 2025, as filed at Companies House. Negative net assets mean the company owed more than it owned at that date.
Corrundum Construction 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 £1,526 (-6.1%) on the year before, to -£27K.
- Net assets rose in 1 of 9 year-on-year comparisons on record.
- Current assets of £22K against £30K owed within a year: 0.7 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 10 years, 2016 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Nov 2025 | -£27K | £22K | £30K | 0 | |
| 30 Nov 2024 | -£25K | £21K | £21K | 0 | |
| 30 Nov 2023 | -£23K | £20K | £13K | 0 | |
| 30 Nov 2022 | -£21K | £25K | £7,659 | 0 | |
| 30 Nov 2021 | -£18K | £31K | 0 | ||
| 30 Nov 2020 | -£16K | £33K | £0 | 0 | |
| 30 Nov 2019 | -£15K | £0 | £16K | ||
| 30 Nov 2018 | £2,110 | £5,000 | £4,311 | ||
| 30 Nov 2017 | £22K | £76K | £57K | ||
| 30 Nov 2016 | £17K | £91K | £76K |
Where Corrundum Construction Limited is registered
The registered office is in Harrow (HA2), in the Harrow local authority area, London. Show HA2 6QA on a map.
Other trade companies in HA2
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- JNJ Engineering LimitedCivil engineering
- Notting Hill Sew LtdRepair services
- Grandwellautos LtdMotor traders
- Multisteel Powdercoating LtdPainters and decorators
- Neon Systems LtdElectricians
- Firstclass Facilities LtdCleaning companies
- PMD Construct LtdBuilders
What happens if Corrundum Construction 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 August 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Sep 2027 to 30 Sep 2027 | £150 |
| 1 to 3 months late | 1 Oct 2027 to 30 Nov 2027 | £375 |
| 3 to 6 months late | 1 Dec 2027 to 29 Feb 2028 | £750 |
| More than 6 months late | From 1 Mar 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Dec 2027 | £200 |
| 3 months late | 29 Feb 2028 | another £200 |
| 6 months late | 30 May 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Nov 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
- 04100768
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 2 November 2000 (25 years ago)
- Registered office
- 35 Edward Road, Harrow, Middlesex, HA2 6QA
- Nature of business
- Other building completion and finishing (SIC 43390)
- Year end
- 30 November (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 November 2025
- Last confirmation statement
- 31 October 2025
Filing notes for building finishing companies
Finishing trade companies cover a wide range of work. Most are micro-entities with simple accounts and a straightforward CT600.
Similar companies in Harrow
Other active building finishing companies registered in Harrow.
- Corrundum Contractors Limited2017
- County Solutions Limited2023
- CRC Builders Ltd2020
- D & G Master Builders Limited2015
- D&G Drywall Finishing Ltd2024
- D&I Global Construction Ltd2026
- Dabasia Constructors Limited2006
- Dackos Construction Ltd2014
All building finishing companies in Harrow · All trades in Harrow · Finishing trades across the UK
Frequently asked questions
When are Corrundum Construction Limited's accounts due?
Corrundum Construction Limited's next accounts are due at Companies House by 31 August 2027 (in 323 days), covering the period to 30 November 2026.
When is Corrundum Construction Limited's CT600 due?
The CT600 for the period to 30 November 2026 is due at HMRC by 30 November 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 September 2027.
Is Corrundum Construction Limited still trading?
Corrundum Construction 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 Corrundum Construction Limited do?
Corrundum Construction Limited is registered under Other building completion and finishing (SIC 43390).
How old is Corrundum Construction Limited?
Corrundum Construction Limited was incorporated on 2 November 2000, 25 years ago.
What is the penalty if Corrundum Construction 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 Corrundum Construction 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.