- Companies
- Machinery repair and installation
- Swansea
- Detec Security Installations Ltd
Detec Security Installations Ltd
- Company number
- 04958415
- Incorporated
- 10 Nov 200322 years trading
- Registered office
- 42 Glanymor Park Drive, Loughor, Swansea, West Glamorgan, SA4 6UQ
- Nature of business
- Repair of electronic and optical equipment
Detec Security Installations Ltd is a 22-year-old private limited company registered in Swansea, company number 04958415, one of 98 machinery repair and installation companies in Swansea. Its next accounts are due at Companies House on 31 August 2027, and the CT600 for the period to 30 November 2026 is due at HMRC on 30 November 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 up £3,384 (+9.5%) on the year before, to -£32K.
- Net assets rose in 4 of 9 year-on-year comparisons on record.
- Current assets of £2,945 against £36K owed within a year: 0.1 times cover.
- 1 employee on average, down from 2 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 Nov 2025 | -£32K | £2,945 | £36K | 1 | |
| 30 Nov 2024 | -£36K | £2,660 | £38K | 2 | |
| 30 Nov 2023 | -£36K | £1,864 | £38K | 2 | |
| 30 Nov 2022 | -£28K | £2,271 | £31K | 2 | |
| 30 Nov 2021 | -£19K | £3,300 | £24K | 2 | |
| 30 Nov 2020 | -£15K | £7,207 | £25K | 2 | |
| 30 Nov 2019 | -£13K | £1,945 | £3,500 | £21K | 2 |
| 30 Nov 2018 | £7,270 | £8,404 | £21K | ||
| 30 Nov 2017 | £4,655 | £3,219 | £14K | ||
| 30 Nov 2016 | £678 | £2,907 | £5,100 | £12K |
Where Detec Security Installations Ltd is registered
The registered office is in Swansea (SA4), in the Swansea local authority area, Wales. Show SA4 6UQ on a map.
Other trade companies in SA4
- Prometheus Scaffolding LimitedScaffolders
- Ridgewood Property Group LtdBuilders
- Trident Infrastructure Projects LtdCivil engineering
- Top Tint Vehicles Commercial & Domestic LimitedMechanics and garages
- RHV Solutions LimitedElectricians
- Bay Divers Services LtdMachinery repair and installation
- Dmo Automotive Services LtdMechanics and garages
- Biggs Contracting Services LtdBuilders
What happens if Detec Security Installations 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 August 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Sep 2027 to 30 Sep 2027 | £150 |
| 1 to 3 months late | 1 Oct 2027 to 30 Nov 2027 | £375 |
| 3 to 6 months late | 1 Dec 2027 to 29 Feb 2028 | £750 |
| More than 6 months late | From 1 Mar 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Dec 2027 | £200 |
| 3 months late | 29 Feb 2028 | another £200 |
| 6 months late | 30 May 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Nov 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
- 04958415
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 10 November 2003 (22 years ago)
- Registered office
- 42 Glanymor Park Drive, Loughor, Swansea, West Glamorgan, SA4 6UQ
- Nature of business
- Repair of electronic and optical equipment (SIC 33130)
- Year end
- 30 November (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 November 2025
- Last confirmation statement
- 10 November 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 Swansea
Other active machinery repair and installation companies registered in Swansea.
- Direct Supplies (Skewen) Limited2017
- DMG Systems Limited2003
- Door Fabrications Limited2006
- DR Hydraulic Services Ltd2020
- DSL Technical Engineering Ltd2020
- Electro-Harmonix UK Limited2011
- Electrotech Vending Ltd2012
- Elevating Excellence Limited2004
All machinery repair and installation companies in Swansea · All trades in Swansea · Machinery repair and installation across the UK
Frequently asked questions
When are Detec Security Installations Ltd's accounts due?
Detec Security Installations Ltd's next accounts are due at Companies House by 31 August 2027 (in 323 days), covering the period to 30 November 2026.
When is Detec Security Installations Ltd's CT600 due?
The CT600 for the period to 30 November 2026 is due at HMRC by 30 November 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 September 2027.
Is Detec Security Installations Ltd still trading?
Detec Security Installations 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 Detec Security Installations Ltd do?
Detec Security Installations Ltd is registered under Repair of electronic and optical equipment (SIC 33130).
How old is Detec Security Installations Ltd?
Detec Security Installations Ltd was incorporated on 10 November 2003, 22 years ago.
What is the penalty if Detec Security Installations 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 Detec Security Installations 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.