- Company number
- 15700084
- Incorporated
- 2 May 20242 years trading
- Registered office
- 67F High Street, London, E17 7DB
- Nature of business
- Construction of domestic buildings; Other building completion and finishing
Ad78 Construction Ltd is a 2-year-old private limited company registered in London, company number 15700084, one of 12,075 building contractors in London. Its next accounts are due at Companies House on 28 February 2027, and the CT600 for the period to 31 May 2026 is due at HMRC on 31 May 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Financial snapshot, 2025
From the balance sheet at 31 May 2025, as filed at Companies House.
Where Ad78 Construction Ltd is registered
The registered office is in London (E17), in the Waltham Forest local authority area, London. Show E17 7DB on a map.
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What happens if Ad78 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 | 1 Jun 2027 | £200 |
| 3 months late | 31 Aug 2027 | another £200 |
| 6 months late | 30 Nov 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 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
- 15700084
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 2 May 2024 (2 years ago)
- Registered office
- 67F High Street, London, E17 7DB
- Nature of business
- Construction of domestic buildings (SIC 41202)
Other building completion and finishing (SIC 43390) - Year end
- 31 May (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 May 2025
- Last confirmation statement
- 1 May 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.
- Adam 360 Property Solutions Ltd2026
- Adam Build Ltd2020
- Adam Collier Consulting Services Limited2025
- Adam Group Construction Ltd2023
- Adam Home Developments Ltd2018
- Adam Michael Ltd2026
- Adam SK Construction Ltd2025
- Adam's Heating & Plumbing Ltd2022
All building contractors in London · All trades in London · Builders across the UK
Frequently asked questions
When are Ad78 Construction Ltd's accounts due?
Ad78 Construction Ltd's next accounts are due at Companies House by 28 February 2027 (in 139 days), covering the period to 31 May 2026.
When is Ad78 Construction Ltd's CT600 due?
The CT600 for the period to 31 May 2026 is due at HMRC by 31 May 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 March 2027.
Is Ad78 Construction Ltd still trading?
Ad78 Construction 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 Ad78 Construction Ltd do?
Ad78 Construction Ltd is registered under Construction of domestic buildings (SIC 41202); Other building completion and finishing (SIC 43390).
How old is Ad78 Construction Ltd?
Ad78 Construction Ltd was incorporated on 2 May 2024, 2 years ago.
What is the penalty if Ad78 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 Ad78 Construction 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.