Company profile · Builders
Isel Construction Ltd
Isel Construction Ltd is a 8-year-old private limited company registered in Barnet, company number 11137616, one of 201 building contractors in Barnet. Its next accounts are due at Companies House on 31 December 2026, and the CT600 for the period to 31 March 2026 is due at HMRC on 31 March 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 March 2025, as filed at Companies House.
Isel Construction 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 up £10K (+111.7%) on the year before, to £1,051.
- Net assets rose in 3 of 7 year-on-year comparisons on record.
- Current assets of £20K against £17K owed within a year: 1.2 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 8 years, 2018 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | £1,051 | £20K | £17K | 0 | |
| 31 Mar 2024 | -£8,978 | £15K | £16K | 1 | |
| 31 Mar 2023 | -£2,551 | £24K | £16K | 0 | |
| 31 Mar 2022 | -£32K | £4,328 | £16K | 2 | |
| 31 Mar 2021 | -£17K | £12K | £6,888 | 2 | |
| 31 Mar 2020 | £207 | £3,295 | £6,795 | £6,588 | 3 |
| 31 Mar 2019 | £20K | £27K | £27K | £7,747 | |
| 31 Mar 2018 | -£100 | -£100 |
Who runs and owns Isel Construction Ltd
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officers (2)
| Name | Role | Appointed |
|---|---|---|
| E*** H*** | Director | Jan 2018 |
| G*** J*** | Director | Dec 2025 |
1 former officer
| Name | Role | Appointed | Left |
|---|---|---|---|
| G*** J*** | Director | May 2025 | May 2025 |
Person with significant control
Where Isel Construction Ltd is registered
The registered office is in Barnet (EN5), in the Barnet local authority area, London. Show EN5 5UE on a map.
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What happens if Isel Construction 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
- 11137616
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 8 January 2018 (8 years ago)
- Registered office
- 7C High Street, Barnet, Hertfordshire, EN5 5UE
- Nature of business
- Construction of commercial buildings (SIC 41201)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 10 April 2026
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 Barnet
Other active building contractors registered in Barnet.
- J & J Asphalt Ltd2007
- J & K Expert Building Service Ltd2016
- J & L Hunsdon Limited2017
- J.E.Q Construction Ltd2026
- Ja Construction UK Ltd2019
- Ja Drylining Ltd2017
- Ja Partners Ltd2017
- Jac Building Services Ltd2018
All building contractors in Barnet · All trades in Barnet · Builders across the UK
Frequently asked questions
When are Isel Construction Ltd's accounts due?
Isel Construction 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 Isel Construction Ltd's CT600 due?
The CT600 for the period to 31 March 2026 is due at HMRC by 31 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2027.
Is Isel Construction Ltd still trading?
Isel Construction 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 Isel Construction Ltd do?
Isel Construction Ltd is registered under Construction of commercial buildings (SIC 41201).
How old is Isel Construction Ltd?
Isel Construction Ltd was incorporated on 8 January 2018, 8 years ago.
Who runs Isel Construction Ltd?
Isel Construction Ltd has 2 active directors, the longest-serving appointed in Jan 2018. Their names and service addresses are on the Companies House register.
Who owns Isel Construction Ltd?
One person or company has significant control of Isel Construction Ltd: an individual (owns 75% or more of the shares).
What is the penalty if Isel Construction 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 Isel Construction 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.