- Company number
- 08161480
- Incorporated
- 30 Jul 201214 years trading
- Registered office
- 72 Queenstown Road, London, SW8 3RY
- Nature of business
- Construction of commercial buildings; Financial management
JJ.Allen Ltd is a 14-year-old private limited company registered in London, company number 08161480, one of 12,075 building contractors 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 unchanged on the year before, at £93.
- Net assets rose in 0 of 9 year-on-year comparisons on record.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 10 years, 2016 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Jul 2025 | £93 | £20K | 0 | ||
| 31 Jul 2024 | £93 | £20K | £0 | 0 | |
| 31 Jul 2023 | £93 | £0 | £0 | 0 | |
| 31 Jul 2022 | £93 | £0 | 0 | ||
| 31 Jul 2021 | £93 | £3,500 | 0 | ||
| 31 Jul 2020 | £93 | £3,000 | 1 | ||
| 31 Jul 2019 | £93 | £8,250 | |||
| 31 Jul 2018 | £93 | £5,550 | |||
| 31 Jul 2017 | £93 | £30K | |||
| 31 Jul 2016 | £93 | £43K | £43K |
Where JJ.Allen Ltd is registered
The registered office is in London (SW8), in the Wandsworth local authority area, London. Show SW8 3RY on a map.
Other trade companies in SW8
- Squeaky Clean Exteriors LtdCleaning companies
- Hamta Motors LtdMotor traders
- The Prestige Building Comoany LtdBuilders
- Align Contractors LtdBuilders
- Fresh Cleaning London LimitedCleaning companies
- Aeon & Iris Atelier LtdPainters and decorators
- Jfu Developments LtdProperty developers
- Prime Elite Cleaning Solutions LtdFinishing trades
What happens if JJ.Allen 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
- 08161480
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 30 July 2012 (14 years ago)
- Registered office
- 72 Queenstown Road, London, SW8 3RY
- Nature of business
- Construction of commercial buildings (SIC 41201)
Financial management (SIC 70221) - Year end
- 31 July (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 July 2025
- Last confirmation statement
- 30 July 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.
- JJM Contractors Ltd2013
- Jjrconstruction Ltd2024
- JJZ Plumbing and Heating Ltd2018
- JK and Sons London Limited2025
- JK Brothers Rendering Ltd2024
- JK Builders Services Ltd2021
- JK Building Construction Limited2016
- JK Building Ltd2023
All building contractors in London · All trades in London · Builders across the UK
Frequently asked questions
When are JJ.Allen Ltd's accounts due?
JJ.Allen 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 JJ.Allen 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 JJ.Allen Ltd still trading?
JJ.Allen 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 JJ.Allen Ltd do?
JJ.Allen Ltd is registered under Construction of commercial buildings (SIC 41201); Financial management (SIC 70221).
How old is JJ.Allen Ltd?
JJ.Allen Ltd was incorporated on 30 July 2012, 14 years ago.
What is the penalty if JJ.Allen 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 JJ.Allen 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.