- Companies
- Electricians
- Ruislip
- LSF Systems Ltd
LSF Systems Ltd
- Company number
- 13494516
- Incorporated
- 5 Jul 20215 years trading
- Registered office
- C/O KDL Accountants, 1F Pembroke House,, 5-9 Pembroke Road,, Ruislip, Middlesex, HA4 8NQ
- Nature of business
- Electrical installation; Security systems service activities
LSF Systems Ltd is a 5-year-old private limited company registered in Ruislip, company number 13494516, one of 89 electrical contractors in Ruislip. Its next accounts are due at Companies House on 31 July 2027, and the CT600 for the period to 31 October 2026 is due at HMRC on 31 October 2027.
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 down £198 (-16.5%) on the year before, to £1,001.
- Net assets rose in 2 of 4 year-on-year comparisons on record.
- Current assets of £23K against £23K owed within a year: 1.0 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 5 years, 2021 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Oct 2025 | £1,001 | £13K | £23K | £23K | 1 |
| 31 Oct 2024 | £1,199 | £14K | £10K | 1 | |
| 31 Oct 2023 | £1,450 | £8,634 | £9,896 | £10K | 1 |
| 31 Oct 2022 | £739 | £9,271 | £8,907 | -1 | |
| 31 Oct 2021 | £1 |
Where LSF Systems Ltd is registered
The registered office is in Ruislip (HA4), in the Hillingdon local authority area, London. Show HA4 8NQ on a map.
Other trade companies in HA4
- SSC London LtdGroundworks and demolition
- DCR Industriltdal LtdPainters and decorators
- Katardino Monten for General Contracting and Supplies LtdCivil engineering
- Apex Build & Move LtdBuilders
- Ridgeway Building Contracts LimitedProperty developers
- Azya Farah LtdBuilders
- Howdens Roofing & Guttering LimitedRoofers
- Vetro Glazing LimitedGlaziers
Shared registered office
40 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 LSF 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 31 July 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Aug 2027 to 31 Aug 2027 | £150 |
| 1 to 3 months late | 1 Sep 2027 to 31 Oct 2027 | £375 |
| 3 to 6 months late | 1 Nov 2027 to 31 Jan 2028 | £750 |
| More than 6 months late | From 1 Feb 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Nov 2027 | £200 |
| 3 months late | 31 Jan 2028 | another £200 |
| 6 months late | 30 Apr 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Oct 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
- 13494516
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 5 July 2021 (5 years ago)
- Registered office
- C/O KDL Accountants, 1F Pembroke House,, 5-9 Pembroke Road,, Ruislip, Middlesex, HA4 8NQ
- Nature of business
- Electrical installation (SIC 43210)
Security systems service activities (SIC 80200) - Year end
- 31 October (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 October 2025
- Last confirmation statement
- 4 July 2025
- Previous names
- Tritech Systems Ltd (until 3 Nov 2021)
Tritech Fire and Security Limited (until 21 Oct 2021)
Filing notes for electrical contractors
Electrical contracting companies are often a director plus a van and tools. Most fall within the micro-entity rules, so the accounts filed at Companies House are short, and the CT600 carries the tax detail.
Similar companies in Ruislip
Other active electrical contractors registered in Ruislip.
- Lumeire Specialist Contracting Limited2025
- M E M Services Limited1984
- M G D Electrical Services Limited2006
- M J Newton Electrical Contractors Limited1998
- M&J Elite Services Ltd2023
- M&M Electrical (England) Ltd2020
- Mark Film Limited2022
- Matrix Maintenance Solutions Ltd2025
All electrical contractors in Ruislip · All trades in Ruislip · Electricians across the UK
Frequently asked questions
When are LSF Systems Ltd's accounts due?
LSF Systems Ltd's next accounts are due at Companies House by 31 July 2027 (in 292 days), covering the period to 31 October 2026.
When is LSF Systems Ltd's CT600 due?
The CT600 for the period to 31 October 2026 is due at HMRC by 31 October 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 August 2027.
Is LSF Systems Ltd still trading?
LSF 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 LSF Systems Ltd do?
LSF Systems Ltd is registered under Electrical installation (SIC 43210); Security systems service activities (SIC 80200).
How old is LSF Systems Ltd?
LSF Systems Ltd was incorporated on 5 July 2021, 5 years ago.
What is the penalty if LSF 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 LSF 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.