- Companies
- Machinery repair and installation
- Cardiff
- High Line Maintenance Ltd
High Line Maintenance Ltd
- Company number
- 14340960
- Incorporated
- 6 Sep 20224 years trading
- Registered office
- 11 Belmont Walk, Cardiff, CF10 5AP
- Nature of business
- Repair and maintenance of aircraft and spacecraft
High Line Maintenance Ltd is a 4-year-old private limited company registered in Cardiff, company number 14340960, one of 137 machinery repair and installation companies in Cardiff. Its next accounts are due at Companies House on 30 June 2027, and the CT600 for the period to 30 September 2026 is due at HMRC on 30 September 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 £529 (-5.3%) on the year before, to £9,464.
- Current assets of £9,498 against £2,864 owed within a year: 3.3 times cover.
- 2 employees on average, up from 1 the year before.
- Balance sheets on record for 3 years, 2023 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Sep 2025 | £9,464 | £9,498 | £2,864 | 2 | |
| 30 Sep 2024 | £9,993 | £8,730 | £2,188 | 1 | |
| 30 Sep 2023 | £4,950 | £11K | £7,970 | 2 |
Where High Line Maintenance Ltd is registered
The registered office is in Cardiff (CF10), in the Cardiff local authority area, Wales. Show CF10 5AP on a map.
Other trade companies in CF10
- Hudcon LtdBuilders
- Skyline Pitched and Flat Roofing LtdRoofers
- Eclipse Construction Group LtdPlasterers
- DWR Plumbing LtdPlumbers and heating engineers
- CF Glazing LtdGlaziers
- Regency Construction Group LtdProperty developers
- Qproperty Solutions LimitedFinishing trades
- Express Vehicle Services (Cardiff) LimitedMechanics and garages
What happens if High Line Maintenance 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 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jul 2027 to 31 Jul 2027 | £150 |
| 1 to 3 months late | 1 Aug 2027 to 30 Sep 2027 | £375 |
| 3 to 6 months late | 1 Oct 2027 to 31 Dec 2027 | £750 |
| More than 6 months late | From 1 Jan 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Oct 2027 | £200 |
| 3 months late | 30 Dec 2027 | another £200 |
| 6 months late | 30 Mar 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Sep 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
- 14340960
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 6 September 2022 (4 years ago)
- Registered office
- 11 Belmont Walk, Cardiff, CF10 5AP
- Nature of business
- Repair and maintenance of aircraft and spacecraft (SIC 33160)
- Year end
- 30 September (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 September 2025
- Last confirmation statement
- 5 September 2025
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 Cardiff
Other active machinery repair and installation companies registered in Cardiff.
- HMG Services Limited2015
- Iddylic Service Cardiff Limited2025
- Igotfixed Limited2020
- In Time Electric Limited2014
- Innovative Fire & Security Limited2008
- JC Stainless Fabrications Limited2021
- JDS Fire & Security Solutions Limited2013
- Jimmy Services Ltd2023
All machinery repair and installation companies in Cardiff · All trades in Cardiff · Machinery repair and installation across the UK
Frequently asked questions
When are High Line Maintenance Ltd's accounts due?
High Line Maintenance Ltd's next accounts are due at Companies House by 30 June 2027 (in 260 days), covering the period to 30 September 2026.
When is High Line Maintenance Ltd's CT600 due?
The CT600 for the period to 30 September 2026 is due at HMRC by 30 September 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 July 2027.
Is High Line Maintenance Ltd still trading?
High Line Maintenance Ltd is listed as active on the Companies House register (checked 13 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 Line Maintenance Ltd do?
High Line Maintenance Ltd is registered under Repair and maintenance of aircraft and spacecraft (SIC 33160).
How old is High Line Maintenance Ltd?
High Line Maintenance Ltd was incorporated on 6 September 2022, 4 years ago.
What is the penalty if High Line Maintenance 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 Line Maintenance Ltd on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 13 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.