- Companies
- Specialist contractors
- London
- Marble Onix Ltd
Marble Onix Ltd
- Company number
- 14509672
- Incorporated
- 28 Nov 20223 years trading
- Registered office
- 57 Stroud Green Road, London, N4 3EG
- Nature of business
- Other specialised construction activities n.e.c.
Marble Onix Ltd is a 3-year-old private limited company registered in London, company number 14509672, one of 4,318 specialist construction companies in London. Its next accounts are due at Companies House on 28 August 2027, and the CT600 for the period to 28 November 2026 is due at HMRC on 28 November 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
Is this your company?
File the accounts to Companies House and the CT600 to HMRC yourself with A.X.E.L Filing. One set of questions, both filings, £49 flat. No accountant, no subscription.
File for Marble Onix LtdOr get a reminder before each deadline
Free. We email you 60, 30, 14, 7 and 1 days before the accounts, CT600 and confirmation statement are due. Unsubscribe in one click.
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 £94K (-65.7%) on the year before, to £49K.
- Current assets of £110K against £73K owed within a year: 1.5 times cover.
- 4 employees on average, up from 3 the year before.
- Balance sheets on record for 3 years, 2023 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Nov 2025 | £49K | £110K | £73K | 4 | |
| 30 Nov 2024 | £144K | £179K | £48K | 3 | |
| 29 Nov 2023 | £16K | £32K | £16K | 4 |
Where Marble Onix Ltd is registered
The registered office is in London (N4), in the Islington local authority area, London. Show N4 3EG on a map.
Other trade companies in N4
- Studio Theo Tan LtdJoiners and carpenters
- Caparis LtdBuilders
- A&S Projects ST LtdBuilders
- Jes Construction LtdBuilders
- Jash Estates LtdFinishing trades
- Avox Construction LtdBuilders
- London Crown Cleaning LtdCleaning companies
- Bayly Electrical & Energy LtdElectricians
Shared registered office
35 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 Marble Onix 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 August 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 29 Aug 2027 to 28 Sep 2027 | £150 |
| 1 to 3 months late | 29 Sep 2027 to 28 Nov 2027 | £375 |
| 3 to 6 months late | 29 Nov 2027 to 28 Feb 2028 | £750 |
| More than 6 months late | From 29 Feb 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 29 Nov 2027 | £200 |
| 3 months late | 28 Feb 2028 | another £200 |
| 6 months late | 28 May 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 28 Nov 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
- 14509672
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 28 November 2022 (3 years ago)
- Registered office
- 57 Stroud Green Road, London, N4 3EG
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 28 November (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 November 2025
- Last confirmation statement
- 2 December 2025
Filing notes for specialist construction companies
Specialist contractors often work under CIS for main contractors. Retentions held back by the customer still count towards turnover once the work is done.
Similar companies in London
Other active specialist construction companies registered in London.
- Marble Plus Ltd2011
- Marble Team Ltd2020
- Marcol Construction Ltd2023
- Mardani Facade Ltd2019
- Maresi Constructions Ltd2025
- Mareth Ltd2023
- Mario Brickwork and Paving Ltd2026
- Mario Ground Ltd2017
All specialist construction companies in London · All trades in London · Specialist contractors across the UK
Frequently asked questions
When are Marble Onix Ltd's accounts due?
Marble Onix Ltd's next accounts are due at Companies House by 28 August 2027 (in 319 days), covering the period to 28 November 2026.
When is Marble Onix Ltd's CT600 due?
The CT600 for the period to 28 November 2026 is due at HMRC by 28 November 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 29 August 2027.
Is Marble Onix Ltd still trading?
Marble Onix 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 Marble Onix Ltd do?
Marble Onix Ltd is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Marble Onix Ltd?
Marble Onix Ltd was incorporated on 28 November 2022, 3 years ago.
What is the penalty if Marble Onix 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 Marble Onix 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.