- Companies
- Property developers
- London
- Assay Construction Limited
Assay Construction Limited
- Company number
- 09673354
- Incorporated
- 7 Jul 201511 years trading
- Registered office
- 28 Greville Street, Unit 11, London, EC1N 8SU
- Nature of business
- Development of building projects
Assay Construction Limited is a 11-year-old private limited company registered in London, company number 09673354, one of 14,100 property development companies in London. Its next accounts are due at Companies House on 30 April 2028, and the CT600 for the period to 31 July 2027 is due at HMRC on 31 July 2028.
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 up £9,599 (+4.7%) on the year before, to -£194K.
- Net assets rose in 3 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, 2017 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Jul 2026 | -£194K | £194K | 0 | ||
| 31 Jul 2025 | -£203K | £203K | 2 | ||
| 31 Jul 2024 | -£192K | £192K | 1 | ||
| 31 Jul 2023 | -£150K | £150K | 0 | ||
| 31 Jul 2022 | -£138K | £138K | 1 | ||
| 31 Jul 2021 | -£138K | £0 | £138K | 1 | |
| 31 Jul 2020 | -£71K | £71K | 0 | ||
| 31 Jul 2019 | -£71K | £0 | £71K | ||
| 31 Jul 2018 | -£79K | £67K | £146K | ||
| 31 Jul 2017 | -£17K | £52K | £69K |
Where Assay Construction Limited is registered
The registered office is in London (EC1N), in the Camden local authority area, London. Show EC1N 8SU on a map.
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What happens if Assay Construction Limited 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 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 May 2028 to 31 May 2028 | £150 |
| 1 to 3 months late | 1 Jun 2028 to 31 Jul 2028 | £375 |
| 3 to 6 months late | 1 Aug 2028 to 31 Oct 2028 | £750 |
| More than 6 months late | From 1 Nov 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Aug 2028 | £200 |
| 3 months late | 31 Oct 2028 | another £200 |
| 6 months late | 31 Jan 2029 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jul 2029 | 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
- 09673354
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 7 July 2015 (11 years ago)
- Registered office
- 28 Greville Street, Unit 11, London, EC1N 8SU
- Nature of business
- Development of building projects (SIC 41100)
- Year end
- 31 July (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 July 2026
- Last confirmation statement
- 19 February 2026
Filing notes for property development companies
Many property development companies are single-project vehicles. Stock of land and buildings sits on the balance sheet as work in progress until sale, and a company that has finished its project may become dormant rather than close.
Similar companies in London
Other active property development companies registered in London.
- Assemble Development Technology Ltd2021
- Assemble Developments Ltd2023
- Asset (UK) Limited2014
- Asset Grove Properties Ltd2020
- Asset Options Ltd2020
- Asset Workshop Limited2016
- Associated Developments Ltd2022
- Associated Management for Business Affairs Ltd2018
All property development companies in London · All trades in London · Property developers across the UK
Frequently asked questions
When are Assay Construction Limited's accounts due?
Assay Construction Limited's next accounts are due at Companies House by 30 April 2028 (in 566 days), covering the period to 31 July 2027.
When is Assay Construction Limited's CT600 due?
The CT600 for the period to 31 July 2027 is due at HMRC by 31 July 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 May 2028.
Is Assay Construction Limited still trading?
Assay Construction Limited 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 Assay Construction Limited do?
Assay Construction Limited is registered under Development of building projects (SIC 41100).
How old is Assay Construction Limited?
Assay Construction Limited was incorporated on 7 July 2015, 11 years ago.
What is the penalty if Assay Construction Limited 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 Assay Construction Limited 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.