- Company number
- 16121115
- Incorporated
- 5 Dec 20241 year trading
- Registered office
- Flat 77 Anderson Heights, 1260 London Road, London, SW16 4EH
- Nature of business
- Construction of commercial buildings; Electrical installation
Ilumination Ltd is a 1-year-old private limited company registered in London, company number 16121115, one of 12,075 building contractors in London. Its next accounts are due at Companies House on 30 September 2027, and the CT600 for the period to 31 December 2026 is due at HMRC on 31 December 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 December 2025, as filed at Companies House.
Where Ilumination Ltd is registered
The registered office is in London (SW16), in the Croydon local authority area, London. Show SW16 4EH on a map.
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What happens if Ilumination 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 30 September 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Oct 2027 to 31 Oct 2027 | £150 |
| 1 to 3 months late | 1 Nov 2027 to 31 Dec 2027 | £375 |
| 3 to 6 months late | 1 Jan 2028 to 31 Mar 2028 | £750 |
| More than 6 months late | From 1 Apr 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jan 2028 | £200 |
| 3 months late | 31 Mar 2028 | another £200 |
| 6 months late | 30 Jun 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Dec 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
- 16121115
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 5 December 2024 (1 year ago)
- Registered office
- Flat 77 Anderson Heights, 1260 London Road, London, SW16 4EH
- Nature of business
- Construction of commercial buildings (SIC 41201)
Electrical installation (SIC 43210) - Year end
- 31 December (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 December 2025
- Last confirmation statement
- 4 December 2025
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.
- Ilyaz Construction Ltd2025
- Im Building Services Limited2019
- Im Construction Group Limited2026
- Im Construction Ltda Ltd2024
- Im Smart Build Ltd2007
- Ima Building Ltd2015
- Imar Property Ltd2024
- Imb Construction Ltd2024
All building contractors in London · All trades in London · Builders across the UK
Frequently asked questions
When are Ilumination Ltd's accounts due?
Ilumination Ltd's next accounts are due at Companies House by 30 September 2027 (in 353 days), covering the period to 31 December 2026.
When is Ilumination Ltd's CT600 due?
The CT600 for the period to 31 December 2026 is due at HMRC by 31 December 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 October 2027.
Is Ilumination Ltd still trading?
Ilumination 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 Ilumination Ltd do?
Ilumination Ltd is registered under Construction of commercial buildings (SIC 41201); Electrical installation (SIC 43210).
How old is Ilumination Ltd?
Ilumination Ltd was incorporated on 5 December 2024, 1 year ago.
What is the penalty if Ilumination 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 Ilumination 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.