- Company number
- 11343303
- Incorporated
- 3 May 20188 years trading
- Registered office
- 16 Berkeley Street, London, W1J 8DZ
- Nature of business
- Construction of commercial buildings; Construction of domestic buildings; Other specialised construction activities n.e.c.
Modulex Modular Buildings UK Limited is a 8-year-old private limited company registered in London, company number 11343303, one of 12,075 building contractors in London. Its next accounts are due at Companies House on 31 March 2027, and the CT600 for the period to 30 June 2026 is due at HMRC on 30 June 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 £525 (-57%) on the year before, to £396.
- Net assets rose in 4 of 7 year-on-year comparisons on record.
- 1 employee on average during the year.
- Balance sheets on record for 8 years, 2019 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Jun 2026 | £396 | £21K | 1 | ||
| 30 Jun 2025 | £921 | £27K | 1 | ||
| 30 Jun 2024 | £722 | £33K | 1 | ||
| 30 Jun 2023 | £1,729 | £40K | 1 | ||
| 30 Jun 2022 | £149 | £46K | 1 | ||
| 30 Jun 2021 | £221 | £50K | £0 | 0 | |
| 30 Jun 2020 | £204 | ||||
| 30 Jun 2019 | £100 |
Where Modulex Modular Buildings UK Limited is registered
The registered office is in London (W1J), in the Westminster local authority area, London. Show W1J 8DZ on a map.
Other trade companies in W1J
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- Eq Care Devizes LimitedProperty developers
- Eq Care Waterlooville LimitedProperty developers
- Domna Renewables LimitedInstallers
- Apex Build London LimitedBuilders
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Also registered at this address
2 other companies use the same registered office as Modulex Modular Buildings UK Limited.
- Conquest Build UK LtdProperty developers
- Modtech Construction Services LimitedSpecialist contractors
What happens if Modulex Modular Buildings UK 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 March 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Apr 2027 to 30 Apr 2027 | £150 |
| 1 to 3 months late | 1 May 2027 to 30 Jun 2027 | £375 |
| 3 to 6 months late | 1 Jul 2027 to 30 Sep 2027 | £750 |
| More than 6 months late | From 1 Oct 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jul 2027 | £200 |
| 3 months late | 30 Sep 2027 | another £200 |
| 6 months late | 30 Dec 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Jun 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
- 11343303
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 3 May 2018 (8 years ago)
- Registered office
- 16 Berkeley Street, London, W1J 8DZ
- Nature of business
- Construction of commercial buildings (SIC 41201)
Construction of domestic buildings (SIC 41202)
Other specialised construction activities n.e.c. (SIC 43999) - Year end
- 30 June (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 June 2025
- Last confirmation statement
- 31 January 2026
Filing notes for building contractors
Building companies often run the Construction Industry Scheme as a contractor, a subcontractor or both. CIS deductions suffered during the year are set against the PAYE bill, and any unrecovered balance at the year end matters when the accounts are drawn up.
Similar companies in London
Other active building contractors registered in London.
- Moenergy Limited2023
- Moet Solutions Ltd2020
- Mohammad Dryliners Ltd2025
- Mojo Construction Ltd2021
- Mojoo Construction Ltd2025
- Moldfire Ltd2022
- Moldova Builders Ltd2021
- Moldwall Ltd2025
All building contractors in London · All trades in London · Builders across the UK
Frequently asked questions
When are Modulex Modular Buildings UK Limited's accounts due?
Modulex Modular Buildings UK Limited's next accounts are due at Companies House by 31 March 2027 (in 170 days), covering the period to 30 June 2026.
When is Modulex Modular Buildings UK Limited's CT600 due?
The CT600 for the period to 30 June 2026 is due at HMRC by 30 June 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 April 2027.
Is Modulex Modular Buildings UK Limited still trading?
Modulex Modular Buildings UK 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 Modulex Modular Buildings UK Limited do?
Modulex Modular Buildings UK Limited is registered under Construction of commercial buildings (SIC 41201); Construction of domestic buildings (SIC 41202); Other specialised construction activities n.e.c. (SIC 43999).
How old is Modulex Modular Buildings UK Limited?
Modulex Modular Buildings UK Limited was incorporated on 3 May 2018, 8 years ago.
What is the penalty if Modulex Modular Buildings UK 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 Modulex Modular Buildings UK 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.