- Companies
- Installers
- London
- Construction UK 21 Ltd
Construction UK 21 Ltd
- Company number
- 10297653
- Incorporated
- 27 Jul 201610 years trading
- Registered office
- 112 Morden Road, London, SW19 3BP
- Nature of business
- Other construction installation
Construction UK 21 Ltd is a 10-year-old private limited company registered in London, company number 10297653, one of 2,278 installation companies (insulation, lifts, shutters and similar) in London. 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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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 down £19K (-306.1%) on the year before, to -£13K.
- Net assets rose in 4 of 8 year-on-year comparisons on record.
- Current assets of £27K against £39K owed within a year: 0.7 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 9 years, 2017 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Jul 2025 | -£13K | £27K | £39K | 1 | |
| 31 Jul 2024 | £6,190 | £28K | £23K | 1 | |
| 31 Jul 2023 | £9,531 | £29K | £21K | 1 | |
| 31 Jul 2022 | £9,230 | £28K | £21K | 1 | |
| 31 Jul 2021 | £1,500 | £20K | £21K | 1 | |
| 31 Jul 2020 | £92 | £27K | £31K | 1 | |
| 31 Jul 2019 | £242 | £5,008 | £4,766 | 1 | |
| 31 Jul 2018 | £182 | £14K | £14K | ||
| 31 Jul 2017 | £22K | £31K | £8,632 |
Who runs and owns Construction UK 21 Ltd
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officer
| Name | Role | Appointed |
|---|---|---|
| E*** C*** | Director | Jul 2016 |
Person with significant control
Where Construction UK 21 Ltd is registered
The registered office is in London (SW19), in the Merton local authority area, London. Show SW19 3BP on a map.
Other trade companies in SW19
- Firstfixlondon Ltd.Builders
- Rainbow One Construction UK LtdSpecialist contractors
- Base Bloc LimitedBuilders
- Concealed Climate LimitedPlumbers and heating engineers
- Morningside LtdProperty developers
- Cupi-Building LtdBuilders
- Crown Infra London LtdBuilders
- Aj & Co One LtdProperty developers
Also registered at this address
16 other companies use the same registered office as Construction UK 21 Ltd.
- BGDP LimitedCivil engineering
- Cav Refurbishment LimitedBuilders
- Condor Construction LimitedBuilders
- Fastlane 7 LimitedMotor traders
- Fastlane7 Coding LimitedMotor traders
- Kansas Hadfield LtdProperty developers
- KNB Maintenance and Support Services LimitedInstallers
- KNB Residential Lettings and Management LimitedFinishing trades
- Mariodabs Tiling LimitedFinishing trades
- Menai Computers LimitedProperty developers
- Navs Nest Properties LimitedFinishing trades
- Orosolis Securities LtdProperty developers
- Peter Carradus Building Services LimitedFinishing trades
- SB7 Maintenance and Support Services LimitedInstallers
- Surfastone LimitedInstallers
- Wimbledon Cleaning Services LimitedCleaning companies
What happens if Construction UK 21 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 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
- 10297653
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 27 July 2016 (10 years ago)
- Registered office
- 112 Morden Road, London, SW19 3BP
- 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
- 26 July 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 London
Other active installation companies (insulation, lifts, shutters and similar) registered in London.
- Constructora Terrazas Limited2024
- Constructpedia Ltd2017
- Controls Install Plus Ltd2019
- Corbett & Sons Limited1972
- Corcoran Angels Ltd2025
- Cork Spray South West Ltd2023
- Cork Worx Ltd2026
- Corporate Locksmith Ltd2024
All installation companies (insulation, lifts, shutters and similar) in London · All trades in London · Installers across the UK
Frequently asked questions
When are Construction UK 21 Ltd's accounts due?
Construction UK 21 Ltd's next accounts are due at Companies House by 30 April 2027 (in 199 days), covering the period to 31 July 2026.
When is Construction UK 21 Ltd'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 Construction UK 21 Ltd still trading?
Construction UK 21 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 Construction UK 21 Ltd do?
Construction UK 21 Ltd is registered under Other construction installation (SIC 43290).
How old is Construction UK 21 Ltd?
Construction UK 21 Ltd was incorporated on 27 July 2016, 10 years ago.
Who runs Construction UK 21 Ltd?
Construction UK 21 Ltd has 1 active director, the longest-serving appointed in Jul 2016. Their names and service addresses are on the Companies House register.
Who owns Construction UK 21 Ltd?
One person or company has significant control of Construction UK 21 Ltd: an individual (owns 75% or more of the shares).
What is the penalty if Construction UK 21 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 Construction UK 21 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.