- Companies
- Builders
- Covent Garden
- J&3Aco Ltd
J&3Aco Ltd
- Company number
- 11807454
- Incorporated
- 5 Feb 20197 years trading
- Registered office
- 71-75 Shelton Street, Covent Garden, London, WC2H 9JQ
- Nature of business
- Construction of domestic buildings; Other business support service activities n.e.c.
J&3Aco Ltd is a 7-year-old private limited company registered in Covent Garden, company number 11807454, one of 418 building contractors in Covent Garden. Its next accounts are due at Companies House on 30 November 2026, and the CT600 for the period to 28 February 2026 is due at HMRC on 28 February 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 £110K (-26.1%) on the year before, to -£531K.
- Net assets rose in 0 of 5 year-on-year comparisons on record.
- Current assets of £2,124 against £25K owed within a year: 0.1 times cover.
- 4 employees on average during the year.
- Balance sheets on record for 7 years, 2020 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 28 Feb 2025 | -£531K | £2,124 | £25K | 4 | |
| 29 Feb 2024 | -£421K | £225 | £21K | 4 | |
| 28 Feb 2023 | -£345K | £4,123 | £88K | 9 | |
| 28 Feb 2022 | -£224K | £18K | £51K | £86K | 9 |
| 28 Feb 2021 | -£184K | £32K | £36K | £36K | 5 |
| 29 Feb 2020 | -£4,405 | £50K | £50K | £4,500 | 1 |
| 28 Feb 2020 | £100 | 1 |
Where J&3Aco 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 J&3Aco 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 November 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Dec 2026 to 31 Dec 2026 | £150 |
| 1 to 3 months late | 1 Jan 2027 to 28 Feb 2027 | £375 |
| 3 to 6 months late | 1 Mar 2027 to 31 May 2027 | £750 |
| More than 6 months late | From 1 Jun 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Mar 2027 | £200 |
| 3 months late | 28 May 2027 | another £200 |
| 6 months late | 28 Aug 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 28 Feb 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
- 11807454
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 5 February 2019 (7 years ago)
- Registered office
- 71-75 Shelton Street, Covent Garden, London, WC2H 9JQ
- Nature of business
- Construction of domestic buildings (SIC 41202)
Other business support service activities n.e.c. (SIC 82990) - Year end
- 28 February (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 28 February 2025
- Last confirmation statement
- 9 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 Covent Garden
Other active building contractors registered in Covent Garden.
- JCS Projects Ltd2026
- JDM Build Ltd2026
- JDN Build Ltd2025
- Jeferson Company Ltd2026
- Jhtroofing Ltd2026
- JK Construction Ltd2010
- JL Interior Ltd2026
- Jme Construction (Tamworth) Ltd2026
All building contractors in Covent Garden · All trades in Covent Garden · Builders across the UK
Frequently asked questions
When are J&3Aco Ltd's accounts due?
J&3Aco Ltd's next accounts are due at Companies House by 30 November 2026 (in 48 days), covering the period to 28 February 2026.
When is J&3Aco Ltd's CT600 due?
The CT600 for the period to 28 February 2026 is due at HMRC by 28 February 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 December 2026.
Is J&3Aco Ltd still trading?
J&3Aco 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 J&3Aco Ltd do?
J&3Aco Ltd is registered under Construction of domestic buildings (SIC 41202); Other business support service activities n.e.c. (SIC 82990).
How old is J&3Aco Ltd?
J&3Aco Ltd was incorporated on 5 February 2019, 7 years ago.
What is the penalty if J&3Aco 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 J&3Aco 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.