- Company number
- 14827794
- Incorporated
- 25 Apr 20233 years trading
- Registered office
- 320 Garratt Lane, London, Greater London, SW18 4EJ
- Nature of business
- Construction of commercial buildings; Electrical installation
Conlon Contracts Ltd is a 3-year-old private limited company registered in London, company number 14827794, one of 12,075 building contractors in London. Its next accounts are due at Companies House on 31 January 2027, and the CT600 for the period to 30 April 2026 is due at HMRC on 30 April 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 £4,502 (-9.4%) on the year before, to £43K.
- Current assets of £65K against £47K owed within a year: 1.4 times cover.
- 2 employees on average, up from 1 the year before.
- Balance sheets on record for 2 years, 2024 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Apr 2025 | £43K | £65K | £47K | 2 | |
| 30 Apr 2024 | £48K | £57K | £40K | 1 |
Where Conlon Contracts Ltd is registered
The registered office is in London (SW18), in the Wandsworth local authority area, London. Show SW18 4EJ on a map.
Other trade companies in SW18
- Altius 24CHT LimitedProperty developers
- Nexlink Technologies LtdElectricians
- Straightedge Builders LtdProperty developers
- Parsons Green Re Design & Build LimitedProperty developers
- Home Appliances Repair LimitedRepair services
- 34 & 34A Lambrook Terrace Freehold LtdProperty developers
- 30 Thorndean LtdProperty developers
- Fircroft Group LimitedProperty developers
Also registered at this address
14 other companies use the same registered office as Conlon Contracts Ltd.
- Astragal Doors and Windows LtdGlaziers
- Atheneum Developments LtdSpecialist contractors
- Garden Club London LimitedLandscapers and gardeners
- HWJ Developments LimitedProperty developers
- Iwik Construction LtdSpecialist contractors
- Jane Woods Design and Project Management LimitedFinishing trades
- JJS Mouldings LimitedRoofers
- Krissbo LimitedBuilders
- Polarac LtdPlumbers and heating engineers
- Pure Maintenance LimitedProperty developers
- Qualitas London LimitedBuilders
- Studdert Property LimitedProperty developers
- Trakehner LtdProperty developers
- Warm Design and Build LtdBuilders
What happens if Conlon Contracts 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 31 January 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Feb 2027 to 28 Feb 2027 | £150 |
| 1 to 3 months late | 1 Mar 2027 to 30 Apr 2027 | £375 |
| 3 to 6 months late | 1 May 2027 to 31 Jul 2027 | £750 |
| More than 6 months late | From 1 Aug 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 May 2027 | £200 |
| 3 months late | 30 Jul 2027 | another £200 |
| 6 months late | 30 Oct 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Apr 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
- 14827794
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 25 April 2023 (3 years ago)
- Registered office
- 320 Garratt Lane, London, Greater London, SW18 4EJ
- Nature of business
- Construction of commercial buildings (SIC 41201)
Electrical installation (SIC 43210) - Year end
- 30 April (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 April 2025
- Last confirmation statement
- 24 April 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.
- Conn-Tech Ltd2025
- Connect Maintenance London Ltd2012
- Connery's Construction Limited2019
- Conobia Ltd2023
- Conojo Ltd2022
- Cononov Ltd2025
- Consartn Ltd2023
- Consta Construction Limited2010
All building contractors in London · All trades in London · Builders across the UK
Frequently asked questions
When are Conlon Contracts Ltd's accounts due?
Conlon Contracts Ltd's next accounts are due at Companies House by 31 January 2027 (in 111 days), covering the period to 30 April 2026.
When is Conlon Contracts Ltd's CT600 due?
The CT600 for the period to 30 April 2026 is due at HMRC by 30 April 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 February 2027.
Is Conlon Contracts Ltd still trading?
Conlon Contracts 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 Conlon Contracts Ltd do?
Conlon Contracts Ltd is registered under Construction of commercial buildings (SIC 41201); Electrical installation (SIC 43210).
How old is Conlon Contracts Ltd?
Conlon Contracts Ltd was incorporated on 25 April 2023, 3 years ago.
What is the penalty if Conlon Contracts 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 Conlon Contracts 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.