- Companies
- Installers
- Cardiff
- Aperture Systems Limited
Aperture Systems Limited
- Company number
- 10529599
- Incorporated
- 16 Dec 20169 years trading
- Registered office
- PO Box 4385, 10529599 - Companies House Default Address, Cardiff, CF14 8LH
- Nature of business
- Other construction installation
Aperture Systems Limited is a 9-year-old private limited company registered in Cardiff, company number 10529599, one of 99 installation companies (insulation, lifts, shutters and similar) in Cardiff. Companies House shows its accounts as overdue: they were due on 30 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 down £4,834 (-16.6%) on the year before, to £24K.
- Net assets rose in 4 of 7 year-on-year comparisons on record.
- Current assets of £50K against £39K owed within a year: 1.3 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 8 years, 2017 to 2024.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Dec 2024 | £24K | £49K | £50K | £39K | 2 |
| 31 Dec 2023 | £29K | £50K | £50K | £33K | 2 |
| 31 Dec 2022 | £35K | £53K | £53K | £22K | 2 |
| 31 Dec 2021 | £28K | £47K | £48K | £19K | 2 |
| 31 Dec 2020 | £5,500 | £11K | £11K | £5,794 | 2 |
| 31 Dec 2019 | £602 | £3,369 | £3,971 | £4,573 | 2 |
| 31 Dec 2018 | -£602 | £3,498 | £4,100 | 1 | |
| 31 Dec 2017 | £1 | £1 | £0 |
Who runs and owns Aperture Systems Limited
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officer
| Name | Role | Appointed |
|---|---|---|
| R*** M*** | Director | Feb 2026 |
1 former officer
| Name | Role | Appointed | Left |
|---|---|---|---|
| C*** R*** | Director | Dec 2016 | Feb 2026 |
Where Aperture Systems Limited is registered
The registered office is in Cardiff (CF14), in the Caerphilly local authority area, Wales. Show CF14 8LH on a map.
Other trade companies in CF14
- Velren Group LtdProperty developers
- Premierroofcare LtdRoofers
- JLG Groundworks LtdCleaning companies
- Tidyvibz LtdCleaning companies
- Ayyappa MTD LtdBuilders
- KM Phoenix Pond, Garden & General Maintenance LtdLandscapers and gardeners
- Eco Green Property Service LtdFinishing trades
- S and J Accident Repairs LtdPainters and decorators
What happens if Aperture Systems Limited 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 | 1 Oct 2026 to 31 Oct 2026 | £150 |
| 1 to 3 months late | 1 Nov 2026 to 31 Dec 2026 | £375 |
| 3 to 6 months late | 1 Jan 2027 to 31 Mar 2027 | £750 |
| More than 6 months late | From 1 Apr 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jan 2027 | £200 |
| 3 months late | 31 Mar 2027 | another £200 |
| 6 months late | 30 Jun 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 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
- 10529599
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 16 December 2016 (9 years ago)
- Registered office
- PO Box 4385, 10529599 - Companies House Default Address, Cardiff, CF14 8LH
- Nature of business
- Other construction installation (SIC 43290)
- Year end
- 31 December (accounting reference date)
- Accounts type
- Unaudited abridged
- Last accounts made up to
- 31 December 2024
- Last confirmation statement
- 9 March 2026
- Previous names
- Rock UK Property Services Limited (until 10 Mar 2026)
Filing notes for installation companies (insulation, lifts, shutters and similar)
Installation companies (insulation, lifts, shutters, solar and similar) often buy stock and equipment up front, so stock at the year end and capital allowances both affect the tax bill.
Similar companies in Cardiff
Other active installation companies (insulation, lifts, shutters and similar) registered in Cardiff.
- Assure Gas Ltd2022
- Atlantic Dwellings Limited2006
- Bgheat Limited2002
- Blues Fire & Integrated Services Limited2019
- Blues Mechanical Ltd2026
- Brill UPVC Ltd2024
- Building Controls Maintenance Limited2003
- Bullhorn Builders Ltd2026
All installation companies (insulation, lifts, shutters and similar) in Cardiff · All trades in Cardiff · Installers across the UK
Frequently asked questions
When are Aperture Systems Limited's accounts due?
Aperture Systems Limited's accounts were due at Companies House on 30 September 2026 and the register shows them as overdue.
When is Aperture Systems Limited's CT600 due?
The CT600 for the period to 31 December 2025 is due at HMRC by 31 December 2026, 12 months after the period end. The corporation tax itself is payable earlier, by 1 October 2026.
Is Aperture Systems Limited still trading?
Aperture Systems Limited 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 Aperture Systems Limited do?
Aperture Systems Limited is registered under Other construction installation (SIC 43290).
How old is Aperture Systems Limited?
Aperture Systems Limited was incorporated on 16 December 2016, 9 years ago.
Who runs Aperture Systems Limited?
Aperture Systems Limited has 1 active director, the longest-serving appointed in Feb 2026. Their names and service addresses are on the Companies House register.
What is the penalty if Aperture Systems Limited 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 Aperture Systems Limited 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.