- Companies
- Plumbers and heating engineers
- London
- Instal Systems Ltd
Instal Systems Ltd
- Company number
- 17491637
- Incorporated
- 30 Sep 2026
- Registered office
- 128 City Road, London, EC1V 2NX
- Nature of business
- Plumbing, heat and air-conditioning installation; Other letting and operating of own or leased real estate; Other research and experimental development on natural sciences and engineering; Combined facilities support activities
Instal Systems Ltd is a newly incorporated private limited company registered in London, company number 17491637, one of 2,972 plumbing and heating companies in London. Its next accounts are due at Companies House on 30 June 2028, and its first CT600 is due at HMRC on 29 September 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 Instal Systems Ltd
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officer
| Name | Role | Appointed |
|---|---|---|
| R*** E*** | Director | Sep 2026 |
Person with significant control
Where Instal Systems Ltd is registered
The registered office is in London (EC1V), in the Islington local authority area, London. Show EC1V 2NX on a map.
Other trade companies in EC1V
- Cardiff Electrical Solutions LtdElectricians
- Edemis Construction LtdBuilders
- Zaylan LtdProperty developers
- Pronto Roofing and Construction LtdRoofers
- J&R Partners LtdBuilders
- The Tile Craft LtdFinishing trades
- Cathal Od Solutions LtdSpecialist contractors
- Hamptons Properties LtdProperty developers
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 Instal Systems 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 June 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jul 2028 to 31 Jul 2028 | £150 |
| 1 to 3 months late | 1 Aug 2028 to 30 Sep 2028 | £375 |
| 3 to 6 months late | 1 Oct 2028 to 31 Dec 2028 | £750 |
| More than 6 months late | From 1 Jan 2029 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Oct 2028 | £200 |
| 3 months late | 30 Dec 2028 | another £200 |
| 6 months late | 30 Mar 2029 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Sep 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
- 17491637
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 30 September 2026
- Registered office
- 128 City Road, London, EC1V 2NX
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
Other letting and operating of own or leased real estate (SIC 68209)
Other research and experimental development on natural sciences and engineering (SIC 72190)
Combined facilities support activities (SIC 81100) - Year end
- 30 September (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.
- Install Right Boilers Ltd2026
- Instant Heating and Plumbing Services Ltd2021
- Instant Repair Services Limited2025
- Io Construction Design Ltd2026
- Ipd Aquarius Ltd2008
- Ipi Plumbing Ltd2024
- Iplumber Heating Ltd2020
- Iq Gas Limited2013
All plumbing and heating companies in London · All trades in London · Plumbers and heating engineers across the UK
Frequently asked questions
When are Instal Systems Ltd's accounts due?
Instal Systems Ltd's next accounts are due at Companies House by 30 June 2028 (in 627 days), covering the period to 30 September 2027.
When is Instal Systems 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 29 September 2027, due by 29 September 2028, and one for the period to 30 September 2027, due by 30 September 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is Instal Systems Ltd still trading?
Instal Systems 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 Instal Systems Ltd do?
Instal Systems Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220); Other letting and operating of own or leased real estate (SIC 68209); Other research and experimental development on natural sciences and engineering (SIC 72190); Combined facilities support activities (SIC 81100).
How old is Instal Systems Ltd?
Instal Systems Ltd was incorporated on 30 September 2026, less than a year ago.
Who runs Instal Systems Ltd?
Instal Systems Ltd has 1 active director, the longest-serving appointed in Sep 2026. Their names and service addresses are on the Companies House register.
Who owns Instal Systems Ltd?
One person or company has significant control of Instal Systems Ltd: an individual (owns 75% or more of the shares).
What is the penalty if Instal Systems 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 Instal Systems 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.