- Companies
- Machinery repair and installation
- Hamilton
- Iso Security Systems Ltd
Iso Security Systems Ltd
- Company number
- 11229119
- Incorporated
- 28 Feb 20188 years trading
- Registered office
- 9 Cransley Close, Hamilton, Leicester, LE5 1QQ
- Nature of business
- Repair of electrical equipment; specialised design activities; Security systems service activities
Iso Security Systems Ltd is a 8-year-old private limited company registered in Hamilton, company number 11229119, one of 30 machinery repair and installation companies in Hamilton. Companies House shows its accounts as overdue: they were due on 15 September 2026.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Finances
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 £135 (+190.1%) on the year before, to £206.
- Net assets rose in 3 of 6 year-on-year comparisons on record.
- Current assets of £4,403 against £3,097 owed within a year: 1.4 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 7 years, 2018 to 2024.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 15 Dec 2024 | £206 | £37 | £4,403 | £3,097 | 1 |
| 15 Dec 2023 | £71 | £2,771 | £808 | 1 | |
| 15 Dec 2022 | £12 | £1 | £5,110 | £2,106 | 1 |
| 15 Dec 2021 | £30 | £153 | £5,463 | £1,529 | 1 |
| 15 Dec 2020 | £54 | £504 | £6,230 | £1,784 | 1 |
| 15 Dec 2019 | £274 | £1,673 | £1,673 | £1,399 | |
| 15 Dec 2018 | £149 | £3,283 | £5,673 | £5,524 |
Where Iso Security Systems Ltd is registered
The registered office is in Hamilton (LE5), in the Leicester local authority area, East Midlands. Show LE5 1QQ on a map.
Other trade companies in LE5
- Aki Moto LtdMechanics and garages
- MP Service Bodyshop LtdMechanics and garages
- JHS Tyres LtdMotor traders
- Blackwood House LtdCleaning companies
- Nest Facility Management LtdElectricians
- Smartvolts Electrical LtdBuilders
- Everything Vag LtdMechanics and garages
- Just Roofing LtdRoofers
What happens if Iso Security Systems Ltd files late
If the accounts reach Companies House today, the late filing penalty is £150 (£300 if last year's accounts were also late). It rises at each step below.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 16 Sep 2026 to 15 Oct 2026 | £150 |
| 1 to 3 months late | 16 Oct 2026 to 15 Dec 2026 | £375 |
| 3 to 6 months late | 16 Dec 2026 to 15 Mar 2027 | £750 |
| More than 6 months late | From 16 Mar 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 16 Dec 2026 | £200 |
| 3 months late | 15 Mar 2027 | another £200 |
| 6 months late | 15 Jun 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 15 Dec 2027 | 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
- 11229119
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 28 February 2018 (8 years ago)
- Registered office
- 9 Cransley Close, Hamilton, Leicester, LE5 1QQ
- Nature of business
- Repair of electrical equipment (SIC 33140)
specialised design activities (SIC 74100)
Security systems service activities (SIC 80200) - Year end
- 15 December (accounting reference date)
- Accounts type
- Unaudited abridged
- Last accounts made up to
- 15 December 2024
- Last confirmation statement
- 13 February 2026
Filing notes for machinery repair and installation companies
Machinery repair and installation companies often carry parts stock and specialist tools, and many work on contracts that span the year end.
Similar companies in Hamilton
Other active machinery repair and installation companies registered in Hamilton.
- Isocon (Engineering) Limited1972
- KP Mobile Welding Services Limited2023
- LS Weighing Limited2017
- McQuade Group Ltd2026
- Moclocks Limited2015
- P Boland Services Ltd2025
- R&A Fire & Security Ltd2021
- RBS Electrical Engineering Limited2011
All machinery repair and installation companies in Hamilton · All trades in Hamilton · Machinery repair and installation across the UK
Frequently asked questions
When are Iso Security Systems Ltd's accounts due?
Iso Security Systems Ltd's accounts were due at Companies House on 15 September 2026 and the register shows them as overdue.
When is Iso Security Systems Ltd's CT600 due?
The CT600 for the period to 15 December 2025 is due at HMRC by 15 December 2026, 12 months after the period end. The corporation tax itself is payable earlier, by 16 September 2026.
Is Iso Security Systems Ltd still trading?
Iso Security Systems Ltd is listed as active on the Companies House register (checked 12 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 Iso Security Systems Ltd do?
Iso Security Systems Ltd is registered under Repair of electrical equipment (SIC 33140); specialised design activities (SIC 74100); Security systems service activities (SIC 80200).
How old is Iso Security Systems Ltd?
Iso Security Systems Ltd was incorporated on 28 February 2018, 8 years ago.
What is the penalty if Iso Security 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 Iso Security Systems Ltd on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 12 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.