- Companies
- Specialist contractors
- Covent Garden
- Cosybox Construction Ltd
Cosybox Construction Ltd
- Company number
- 10934922
- Incorporated
- 29 Aug 20179 years trading
- Registered office
- 71-75 Shelton Street, Covent Garden, London, WC2H 9JQ
- Nature of business
- Other specialised construction activities n.e.c.; Buying and selling of own real estate
Cosybox Construction Ltd is a 9-year-old private limited company registered in Covent Garden, company number 10934922, one of 204 specialist construction companies in Covent Garden. Its next accounts are due at Companies House on 28 February 2027, and the CT600 for the period to 30 May 2026 is due at HMRC on 30 May 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 £1,049 (-8.2%) on the year before, to -£14K.
- Net assets rose in 0 of 4 year-on-year comparisons on record.
- 1 employee on average during the year.
- Balance sheets on record for 8 years, 2018 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 May 2025 | -£14K | £14K | 1 | ||
| 31 May 2024 | -£13K | £0 | £13K | 1 | |
| 31 May 2023 | -£8,820 | £717 | £9,537 | 1 | |
| 31 May 2022 | £3,560 | £14K | 1 | ||
| 31 May 2021 | £6,181 | £16K | £16K | 1 | |
| 31 May 2020 | £3 | £3,999 | £16K | 1 | |
| 31 May 2019 | -£16K | £13K | £26K | 0 | |
| 31 May 2018 | £1 | £1 |
Who runs and owns Cosybox Construction Ltd
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officer
| Name | Role | Appointed |
|---|---|---|
| S*** R*** | Director | May 2020 |
1 former officer
| Name | Role | Appointed | Left |
|---|---|---|---|
| D*** R*** | Director | Aug 2017 | Sep 2020 |
Person with significant control
Where Cosybox Construction Ltd is registered
The registered office is in Covent Garden (WC2H), in the Camden local authority area, London. Show WC2H 9JQ on a map.
Other trade companies in WC2H
- Superclean Agency LtdCleaning companies
- Sal Cleaning LtdCleaning companies
- Cityshine Facilities Services LtdCleaning companies
- Pureoceanscleaning LtdCleaning companies
- Muca Property Group LimitedProperty developers
- E.L.G.G LtdJoiners and carpenters
- First Ascentia Integrated LtdCleaning companies
- Fixing London LtdSpecialist contractors
Shared registered office
4,529 companies on our pages use this registered office address. An address shared this widely is usually an accountant's office or a company formation agent's service address, not where the business trades from.
What happens if Cosybox Construction 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 28 February 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Mar 2027 to 31 Mar 2027 | £150 |
| 1 to 3 months late | 1 Apr 2027 to 31 May 2027 | £375 |
| 3 to 6 months late | 1 Jun 2027 to 31 Aug 2027 | £750 |
| More than 6 months late | From 1 Sep 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 31 May 2027 | £200 |
| 3 months late | 30 Aug 2027 | another £200 |
| 6 months late | 30 Nov 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 May 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
- 10934922
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 29 August 2017 (9 years ago)
- Registered office
- 71-75 Shelton Street, Covent Garden, London, WC2H 9JQ
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
Buying and selling of own real estate (SIC 68100) - Year end
- 30 May (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 May 2025
- Last confirmation statement
- 28 August 2025
- Previous names
- Cosybox Lower Addison Gardens Limited (until 7 Feb 2018)
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 Covent Garden
Other active specialist construction companies registered in Covent Garden.
- Crescent Solutions Limited2026
- Crestmark Group Ltd2025
- CS-K Rope Works Ltd2026
- Da Vinci Contracting Ltd2026
- Daniel Moody Blade Repair Limited2023
- Dealn Ltd2023
- Delstanche & Partners Ltd2026
- Demand Drone Dimensions Ltd2022
All specialist construction companies in Covent Garden · All trades in Covent Garden · Specialist contractors across the UK
Frequently asked questions
When are Cosybox Construction Ltd's accounts due?
Cosybox Construction Ltd's next accounts are due at Companies House by 28 February 2027 (in 138 days), covering the period to 30 May 2026.
When is Cosybox Construction Ltd's CT600 due?
The CT600 for the period to 30 May 2026 is due at HMRC by 30 May 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 March 2027.
Is Cosybox Construction Ltd still trading?
Cosybox Construction Ltd is listed as active on the Companies House register (checked 12 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 Cosybox Construction Ltd do?
Cosybox Construction Ltd is registered under Other specialised construction activities n.e.c. (SIC 43999); Buying and selling of own real estate (SIC 68100).
How old is Cosybox Construction Ltd?
Cosybox Construction Ltd was incorporated on 29 August 2017, 9 years ago.
Who runs Cosybox Construction Ltd?
Cosybox Construction Ltd has 1 active director, the longest-serving appointed in May 2020. Their names and service addresses are on the Companies House register.
Who owns Cosybox Construction Ltd?
One person or company has significant control of Cosybox Construction Ltd: Cosybox Holdings Ltd (owns 75% or more of the shares).
What is the penalty if Cosybox Construction 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 Cosybox Construction Ltd on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 12 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.