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- Ilm Installations Limited
Company profile · Plumbers and heating engineers
Ilm Installations Limited
Ilm Installations Limited is a newly incorporated private limited company registered in London, company number 17406262, one of 2,972 plumbing and heating companies in London. Its next accounts are due at Companies House on 18 May 2028, and its first CT600 is due at HMRC on 17 August 2028.
Key dates
This company has not filed accounts yet. First accounts are due 21 months after incorporation, and the first period can run longer than a year.
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Who runs and owns Ilm Installations Limited
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officer
| Name | Role | Appointed |
|---|---|---|
| I*** M*** | Director | Aug 2026 |
Person with significant control
Where Ilm Installations Limited is registered
The registered office is in London (N1), in the Hackney local authority area, London. Show N1 7GU on a map.
Other trade companies in N1
- Tagwise LtdSpecialist contractors
- Sphere Aviation Solutions UK LtdMachinery repair and installation
- Get IT Done Builders LtdJoiners and carpenters
- Evolution Products LimitedMotor traders
- Fleetstone Trading LtdMotor traders
- Kenneth Brady LtdElectricians
- UK Import Export LtdBuilders
- Magic Door Services LimitedMachinery repair and installation
Shared registered office
1,583 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 Ilm Installations 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 18 May 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 19 May 2028 to 18 Jun 2028 | £150 |
| 1 to 3 months late | 19 Jun 2028 to 18 Aug 2028 | £375 |
| 3 to 6 months late | 19 Aug 2028 to 18 Nov 2028 | £750 |
| More than 6 months late | From 19 Nov 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Sep 2028 | £200 |
| 3 months late | 30 Nov 2028 | another £200 |
| 6 months late | 28 Feb 2029 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Aug 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
- 17406262
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 18 August 2026
- Registered office
- 20 Wenlock Road, London, N1 7GU
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 August (accounting reference date)
- Accounts type
- No accounts filed yet
Filing notes for plumbing and heating companies
Plumbing and heating companies frequently work under CIS for main contractors and also directly for homeowners, so turnover can mix CIS and non-CIS income.
Similar companies in London
Other active plumbing and heating companies registered in London.
- Im Climacare Ltd2026
- Im Mechanical & Electrical Services Ltd2006
- Im Prime Plumbing Ltd2026
- Imaa Plumbing Ltd2018
- Imech Engineering Limited2024
- Imf Plumbing & Heating Ltd2026
- Imk Plumbing Limited2024
- Iml Plumbing Ltd2019
All plumbing and heating companies in London · All trades in London · Plumbers and heating engineers across the UK
Frequently asked questions
When are Ilm Installations Limited's accounts due?
Ilm Installations Limited's next accounts are due at Companies House by 18 May 2028 (in 584 days), covering the period to 31 August 2027.
When is Ilm Installations Limited's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 17 August 2027, due by 17 August 2028, and one for the period to 31 August 2027, due by 31 August 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is Ilm Installations Limited still trading?
Ilm Installations 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 Ilm Installations Limited do?
Ilm Installations Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Ilm Installations Limited?
Ilm Installations Limited was incorporated on 18 August 2026, less than a year ago.
Who runs Ilm Installations Limited?
Ilm Installations Limited has 1 active director, the longest-serving appointed in Aug 2026. Their names and service addresses are on the Companies House register.
Who owns Ilm Installations Limited?
One person or company has significant control of Ilm Installations Limited: an individual (owns 75% or more of the shares).
What is the penalty if Ilm Installations 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 Ilm Installations Limited 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.