- Companies
- Installers
- St Helens
- Gemini Security Systems Ltd
Gemini Security Systems Ltd
- Company number
- 04369057
- Incorporated
- 7 Feb 200224 years trading
- Registered office
- 17 George Street, St Helens, Merseyside, WA10 1DB
- Nature of business
- Other construction installation
Gemini Security Systems Ltd is a 24-year-old private limited company registered in St Helens, company number 04369057, one of 13 installation companies (insulation, lifts, shutters and similar) in St Helens. Its next accounts are due at Companies House on 31 December 2026, and the CT600 for the period to 31 March 2026 is due at HMRC on 31 March 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
Is this your company?
File the accounts to Companies House and the CT600 to HMRC yourself with A.X.E.L Filing. One set of questions, both filings, £49 flat. No accountant, no subscription.
File for Gemini Security Systems LtdOr get a reminder before each deadline
Free. We email you 60, 30, 14, 7 and 1 days before the accounts, CT600 and confirmation statement are due. Unsubscribe in one click.
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 £998 (-26.7%) on the year before, to £2,741.
- Net assets rose in 2 of 9 year-on-year comparisons on record.
- Current assets of £115K against £109K owed within a year: 1.1 times cover.
- 7 employees on average during the year.
- 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 |
|---|---|---|---|---|---|
| 31 Mar 2025 | £2,741 | £115K | £109K | 7 | |
| 31 Mar 2024 | £3,739 | £138K | £122K | 7 | |
| 31 Mar 2023 | £6,081 | £133K | £106K | 7 | |
| 31 Mar 2022 | £24K | £160K | £102K | 7 | |
| 31 Mar 2021 | £16K | £133K | £74K | 7 | |
| 31 Mar 2020 | £38K | £116K | £81K | 8 | |
| 31 Mar 2019 | £55K | £140K | £91K | ||
| 31 Mar 2018 | £2,951 | £86K | £102K | ||
| 31 Mar 2017 | £3,492 | £88K | £93K | ||
| 31 Mar 2016 | £10K | £179 | £123K | £115K |
Where Gemini Security Systems Ltd is registered
The registered office is in St Helens (WA10), in the St. Helens local authority area, North West. Show WA10 1DB on a map.
Other trade companies in WA10
- BNB Trade LimitedMotor traders
- Hatton’S Utilities LtdCivil engineering
- Ste Leatherbarrow Building and Roofing LtdBuilders
- Maqur Services LtdBuilders
- Speakman Chilled-Worx LtdMachinery repair and installation
- JM Technical LtdMachinery repair and installation
- P.W.Fencing LtdProperty developers
- Subsea Cable Solutions LimitedInstallers
Also registered at this address
20 other companies use the same registered office as Gemini Security Systems Ltd.
- Acts Maintenance Solutions LtdPlumbers and heating engineers
- Aircraft and Vehicle Services LimitedMechanics and garages
- Coleford Developments LimitedProperty developers
- D G Rebar LtdCivil engineering
- G Palfrey & Son LimitedFinishing trades
- Jacques Landscapes LimitedLandscapers and gardeners
- Karl Williams Building Services LtdFinishing trades
- Keda Construction LtdBuilders
- M&M Developments (Wigan) Ltd.Property developers
- McNulty Young Property Development LimitedBuilders
- MWB Residence LimitedProperty developers
- N Clarke LimitedCivil engineering
- New Dawn Projects LimitedBuilders
- Ontrack Electrical LimitedElectricians
- Orrell Roofline LimitedRoofers
- Powercom Systems LimitedElectricians
- Rarmervale LimitedProperty developers
- Reform Construction LimitedBuilders
- Silverbow Construction LimitedBuilders
- ST Helens and District Conservative and Unionist Building Company LimitedProperty developers
What happens if Gemini Security 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 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- 04369057
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 7 February 2002 (24 years ago)
- Registered office
- 17 George Street, St Helens, Merseyside, WA10 1DB
- Nature of business
- Other construction installation (SIC 43290)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 7 February 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 St Helens
Other active installation companies (insulation, lifts, shutters and similar) registered in St Helens.
- J.W.Rigby Construction Ltd2026
- John Millington Building Services Limited2006
- Kieran Construction Limited2024
- KMC Brickwork and Groundwork Ltd2022
- Llewellyn & Son Loft Conversions Ltd2026
- Omc Utilities Limited2017
- SMC Joinery and Construction Ltd2024
- Total Door Installations Ltd2025
All installation companies (insulation, lifts, shutters and similar) in St Helens · All trades in St Helens · Installers across the UK
Frequently asked questions
When are Gemini Security Systems Ltd's accounts due?
Gemini Security Systems Ltd's next accounts are due at Companies House by 31 December 2026 (in 80 days), covering the period to 31 March 2026.
When is Gemini Security Systems Ltd's CT600 due?
The CT600 for the period to 31 March 2026 is due at HMRC by 31 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2027.
Is Gemini Security Systems Ltd still trading?
Gemini Security 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 Gemini Security Systems Ltd do?
Gemini Security Systems Ltd is registered under Other construction installation (SIC 43290).
How old is Gemini Security Systems Ltd?
Gemini Security Systems Ltd was incorporated on 7 February 2002, 24 years ago.
What is the penalty if Gemini Security 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 Gemini Security 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.