- Companies
- Machinery repair and installation
- Ruislip
- High Efficiency Systems Ltd
High Efficiency Systems Ltd
- Company number
- 16235347
- Incorporated
- 6 Feb 20251 year trading
- Registered office
- 2ND Floor College House, 17 King Edwards Road,, Ruislip, London,, HA4 7AE
- Nature of business
- Repair and maintenance of ships and boats
High Efficiency Systems Ltd is a 1-year-old private limited company registered in Ruislip, company number 16235347, one of 17 machinery repair and installation companies in Ruislip. Its next accounts are due at Companies House on 6 November 2026, and its first CT600 is due at HMRC on 5 February 2027.
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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Where High Efficiency Systems Ltd is registered
The registered office is in Ruislip (HA4), in the Hillingdon local authority area, London. Show HA4 7AE 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
264 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 High Efficiency 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 6 November 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 7 Nov 2026 to 6 Dec 2026 | £150 |
| 1 to 3 months late | 7 Dec 2026 to 6 Feb 2027 | £375 |
| 3 to 6 months late | 7 Feb 2027 to 6 May 2027 | £750 |
| More than 6 months late | From 7 May 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Mar 2027 | £200 |
| 3 months late | 28 May 2027 | another £200 |
| 6 months late | 28 Aug 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 28 Feb 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
- 16235347
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 6 February 2025 (1 year ago)
- Registered office
- 2ND Floor College House, 17 King Edwards Road,, Ruislip, London,, HA4 7AE
- Nature of business
- Repair and maintenance of ships and boats (SIC 33150)
- Year end
- 28 February (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 5 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 Ruislip
Other active machinery repair and installation companies registered in Ruislip.
- Jeffreeze Refrigeration Ltd2014
- Jon Edwards Repair Ltd2015
- On-Line Refrigeration & Air Conditioning Limited1996
- P&F Domestic Solutions Ltd2022
- Peak Inspections Ltd2022
- Robotic Design Ltd2026
- SMH Plant Services Limited2017
- Star Blade Ltd2015
All machinery repair and installation companies in Ruislip · All trades in Ruislip · Machinery repair and installation across the UK
Frequently asked questions
When are High Efficiency Systems Ltd's accounts due?
High Efficiency Systems Ltd's next accounts are due at Companies House by 6 November 2026 (in 25 days), covering the period to 28 February 2026.
When is High Efficiency 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 5 February 2026, due by 5 February 2027, and one for the period to 28 February 2026, due by 28 February 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is High Efficiency Systems Ltd still trading?
High Efficiency 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 High Efficiency Systems Ltd do?
High Efficiency Systems Ltd is registered under Repair and maintenance of ships and boats (SIC 33150).
How old is High Efficiency Systems Ltd?
High Efficiency Systems Ltd was incorporated on 6 February 2025, 1 year ago.
What is the penalty if High Efficiency 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 High Efficiency 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.