- Companies
- Machinery repair and installation
- London
- Yy Security Installations Limited
Yy Security Installations Limited
- Company number
- 09075529
- Incorporated
- 6 Jun 201412 years trading
- Registered office
- 182 King Street, London, W6 0RA
- Nature of business
- Repair and maintenance of other transport equipment n.e.c.
Yy Security Installations Limited is a 12-year-old private limited company registered in London, company number 09075529, one of 1,743 machinery repair and installation companies in London. Its next accounts are due at Companies House on 30 June 2027, and its first CT600 is due at HMRC on 30 June 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 £222K (-48.7%) on the year before, to £234K.
- Net assets rose in 4 of 9 year-on-year comparisons on record.
- Current assets of £1.5M against £1.2M owed within a year: 1.2 times cover.
- 1 employee on average, down from 63 the year before.
- Balance sheets on record for 10 years, 2016 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Jun 2025 | £234K | £34K | £1.5M | £1.2M | 1 |
| 30 Jun 2024 | £456K | £100K | £1.4M | £985K | 63 |
| 30 Jun 2023 | £538K | £55K | £1.4M | £857K | 63 |
| 30 Jun 2022 | £590K | £6,430 | £1.4M | £789K | 63 |
| 30 Jun 2021 | £780K | £47K | £1.7M | £892K | 0 |
| 30 Jun 2020 | £913K | £343K | £1.4M | £484K | 53 |
| 30 Jun 2019 | £860K | £235K | £2M | £1.2M | |
| 30 Jun 2018 | £709K | £31K | £1.8M | £1.1M | |
| 30 Jun 2017 | £367K | £193K | £870K | £530K | |
| 30 Jun 2016 | £192K | £35K | £610K | £433K |
Who runs and owns Yy Security Installations Limited
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officer
| Name | Role | Appointed |
|---|---|---|
| S*** O*** | Director | Jun 2014 |
People with significant control (2)
Charges (secured borrowing)
1 of 3 registered charges are outstanding. A charge is security a lender takes over a company's assets, typically for a loan, mortgage or asset finance.
| Lender | Status | Registered |
|---|---|---|
| Bibby Financial Services Ltd (As Security Trustee) | Outstanding | Feb 2023 |
| Aldermore Bank PLC | Satisfied Feb 2024 | Jul 2018 |
| Lloyds Bank Commercial Finance Ltd | Satisfied Sep 2022 | Dec 2014 |
Public contracts won
Yy Security Installations Limited has one public sector contract award on record; the ones with their own published value total £282K (2025). Source: Contracts Finder and Find a Tender award notices. These were matched by the company's exact name because the notice gave no company number.
| Buyer | Contract | Value | Awarded |
|---|---|---|---|
| Transport for London | Direct award for the management of locks and keys for London Underground Site | £282K | 3 Dec 2025 |
Where Yy Security Installations Limited is registered
The registered office is in London (W6), in the Hammersmith and Fulham local authority area, London. Show W6 0RA on a map.
Other trade companies in W6
- Goldhawk Contractors LtdInstallers
- Glow Trading LtdCleaning companies
- Element 4 Construction LtdFinishing trades
- Deluxe Partners LtdCleaning companies
- Starline Motors LimitedMotor traders
- Piotr Olechno Decorator LtdPainters and decorators
- PHJ Construction LtdBuilders
- Tribesell Motors LimitedMotor traders
What happens if Yy Security Installations Limited 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
- 09075529
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 6 June 2014 (12 years ago)
- Registered office
- 182 King Street, London, W6 0RA
- Nature of business
- Repair and maintenance of other transport equipment n.e.c. (SIC 33170)
- Year end
- 30 September (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 June 2025
- Last confirmation statement
- 19 January 2026
- Charges (mortgages)
- 1 outstanding of 3 registered
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 London
Other active machinery repair and installation companies registered in London.
- Z Controls & Automation Ltd2022
- Z Home Solutions Limited2025
- Z&J Baranski Ltd2023
- Z&M Maintenance Ltd2024
- Z-Electric Limited2026
- Zabnas Engineers Limited2012
- Zaklad Uslug Elektrycznych Elpet Ltd2025
- Zaman Electrical Engineering Works Ltd2020
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Frequently asked questions
When are Yy Security Installations Limited's accounts due?
Yy Security Installations Limited's next accounts are due at Companies House by 30 June 2027 (in 261 days), covering the period to 30 September 2026.
When is Yy Security Installations Limited's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 30 June 2026, due by 30 June 2027, and one for the period to 30 September 2026, due by 30 September 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Yy Security Installations Limited still trading?
Yy Security Installations Limited 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 Yy Security Installations Limited do?
Yy Security Installations Limited is registered under Repair and maintenance of other transport equipment n.e.c. (SIC 33170).
How old is Yy Security Installations Limited?
Yy Security Installations Limited was incorporated on 6 June 2014, 12 years ago.
Who runs Yy Security Installations Limited?
Yy Security Installations Limited has 1 active director, the longest-serving appointed in Jun 2014. Their names and service addresses are on the Companies House register.
Who owns Yy Security Installations Limited?
2 people or companies have significant control of Yy Security Installations Limited: an individual (owns 25% to 50% of the shares); an individual (owns 75% or more of the shares).
Has Yy Security Installations Limited won public sector contracts?
Yes. Yy Security Installations Limited has one contract award from public bodies on Contracts Finder and Find a Tender (those with their own published value total £282K), most recently from Transport for London.
What is the penalty if Yy Security Installations 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 Yy Security Installations Limited 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.