- Companies
- Finishing trades
- Isleworth
- Key Building Works Ltd
Key Building Works Ltd
- Company number
- 05692580
- Incorporated
- 31 Jan 200620 years trading
- Registered office
- Unit 4A Worton Hall Trading Estate, Worton Road, Isleworth, Middlesex, TW7 6ER
- Nature of business
- Other building completion and finishing
Key Building Works Ltd is a 20-year-old private limited company registered in Isleworth, company number 05692580, one of 30 building finishing companies in Isleworth. Its next accounts are due at Companies House on 31 January 2027, and the CT600 for the period to 30 April 2026 is due at HMRC on 30 April 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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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 £26K (+14.8%) on the year before, to £204K.
- Net assets rose in 5 of 9 year-on-year comparisons on record.
- Current assets of £204K against £61K owed within a year: 3.3 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 10 years, 2018 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Apr 2025 | £204K | £16K | £204K | £61K | 0 |
| 30 Apr 2024 | £178K | £165K | £89K | 2 | |
| 30 Apr 2023 | £108K | £98K | £120K | £89K | 1 |
| 30 Apr 2022 | £134K | £130K | £133K | £65K | 1 |
| 30 Apr 2021 | £68K | £65K | £44K | 1 | |
| 30 Apr 2020 | £76K | £16K | £35K | 1 | |
| 30 Apr 2019 | £57K | £28K | £56K | ||
| 29 Apr 2019 | £57K | £28K | £56K | 1 | |
| 30 Apr 2018 | £49K | £16K | £49K | ||
| 29 Apr 2018 | £49K | £16K | £49K |
Where Key Building Works Ltd is registered
The registered office is in Isleworth (TW7), in the Hounslow local authority area, London. Show TW7 6ER on a map.
Other trade companies in TW7
- Pracom LtdMachinery repair and installation
- V&R Construction Group LtdBuilders
- Gio Construction LimitedBuilders
- S & H Bodywork LtdMechanics and garages
- KS Garage Isleworth LtdMotor traders
- C Wiseman Services LtdCleaning companies
- Avenida Developments LtdProperty developers
- Courtesy Cars Group UK LtdMotor traders
What happens if Key Building Works 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 31 January 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Feb 2027 to 28 Feb 2027 | £150 |
| 1 to 3 months late | 1 Mar 2027 to 30 Apr 2027 | £375 |
| 3 to 6 months late | 1 May 2027 to 31 Jul 2027 | £750 |
| More than 6 months late | From 1 Aug 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 May 2027 | £200 |
| 3 months late | 30 Jul 2027 | another £200 |
| 6 months late | 30 Oct 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Apr 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
- 05692580
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 31 January 2006 (20 years ago)
- Registered office
- Unit 4A Worton Hall Trading Estate, Worton Road, Isleworth, Middlesex, TW7 6ER
- Nature of business
- Other building completion and finishing (SIC 43390)
- Year end
- 30 April (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 April 2025
- Last confirmation statement
- 27 January 2026
- Charges (mortgages)
- 1 outstanding of 1 registered
- Previous names
- Small Building Works (South West) Ltd (until 21 Apr 2010)
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 Isleworth
Other active building finishing companies registered in Isleworth.
- Mekic Limited2007
- MK Glass Limited2022
- Noga Building Services Ltd2022
- Osterley Construction Ltd2013
- Premier Refurbishments and Maintenance Limited2025
- RF General Building Ltd2024
- Roman Arch Construction Ltd2013
- Rose Line Properties Ltd2022
All building finishing companies in Isleworth · All trades in Isleworth · Finishing trades across the UK
Frequently asked questions
When are Key Building Works Ltd's accounts due?
Key Building Works Ltd's next accounts are due at Companies House by 31 January 2027 (in 110 days), covering the period to 30 April 2026.
When is Key Building Works Ltd's CT600 due?
The CT600 for the period to 30 April 2026 is due at HMRC by 30 April 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 February 2027.
Is Key Building Works Ltd still trading?
Key Building Works 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 Key Building Works Ltd do?
Key Building Works Ltd is registered under Other building completion and finishing (SIC 43390).
How old is Key Building Works Ltd?
Key Building Works Ltd was incorporated on 31 January 2006, 20 years ago.
What is the penalty if Key Building Works 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 Key Building Works 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.