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- Solidium Design Ltd
Company profile · Property developers
Solidium Design Ltd
Solidium Design Ltd is a 7-year-old private limited company registered in London, company number 11738517, one of 14,100 property development companies in London. Its next accounts are due at Companies House on 31 December 2026, and its first CT600 is due at HMRC on 31 December 2026.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Financial snapshot, 2024
From the balance sheet at 31 December 2024, as filed at Companies House. Negative net assets mean the company owed more than it owned at that date.
Solidium Design Ltd over the years
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 £22K on the year before, to -£22K.
- Net assets rose in 1 of 5 year-on-year comparisons on record.
- Current assets of £47K against £35K owed within a year: 1.3 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 6 years, 2019 to 2024.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Dec 2024 | -£22K | £47K | £35K | 2 | |
| 31 Dec 2023 | £100 | £64K | £40K | 2 | |
| 31 Dec 2022 | -£5,586 | £0 | £53K | £25K | 1 |
| 31 Dec 2021 | £38 | £20K | £70K | £27K | 1 |
| 31 Dec 2020 | £100 | £22K | £51K | £6,928 | 0 |
| 31 Dec 2019 | £41K | £42K | £76K | £36K | 0 |
Where Solidium Design Ltd is registered
The registered office is in London (EC1V), in the Islington local authority area, London. Show EC1V 2NX on a map.
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Shared registered office
2,436 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 Solidium Design 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 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- 11738517
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 21 December 2018 (7 years ago)
- Registered office
- 128 City Road, London, EC1V 2NX
- Nature of business
- Development of building projects (SIC 41100)
- Year end
- 31 December (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 December 2024
- Last confirmation statement
- 24 June 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.
- Solidquinn Concrete Limited2025
- Solidspace Batchwood Gardens Limited2021
- Solidspace Eastdown Park Limited2019
- Solidspace Limited2010
- Solihull Ivy Investments Limited2020
- Soller Capital Management Limited2019
- Soller Development Management Limited2021
- Soller Eight Limited2018
All property development companies in London · All trades in London · Property developers across the UK
Frequently asked questions
When are Solidium Design Ltd's accounts due?
Solidium Design Ltd's next accounts are due at Companies House by 31 December 2026 (in 80 days), covering the period to 31 March 2026.
When is Solidium Design Ltd's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 31 December 2025, due by 31 December 2026, and one for the period to 31 March 2026, due by 31 March 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Solidium Design Ltd still trading?
Solidium Design 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 Solidium Design Ltd do?
Solidium Design Ltd is registered under Development of building projects (SIC 41100).
How old is Solidium Design Ltd?
Solidium Design Ltd was incorporated on 21 December 2018, 7 years ago.
What is the penalty if Solidium Design 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 Solidium Design Ltd on Companies House for filed documents, officers and the full history.
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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.