- Companies
- Electricians
- Dartford
- Box Security Ltd
Box Security Ltd
- Company number
- 02563687
- Incorporated
- 29 Nov 199035 years trading
- Registered office
- Concord House, 41 Overy Street, Dartford, Kent, DA1 1UP
- Nature of business
- Electrical installation
Box Security Ltd is a 35-year-old private limited company registered in Dartford, company number 02563687, one of 147 electrical contractors in Dartford. Its next accounts are due at Companies House on 30 April 2027, and the CT600 for the period to 31 July 2026 is due at HMRC on 31 July 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 £6,673 (-30.2%) on the year before, to -£29K.
- Net assets rose in 2 of 9 year-on-year comparisons on record.
- Current assets of £4,209 against £36K owed within a year: 0.1 times cover.
- 2 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 Jul 2025 | -£29K | £3,906 | £4,209 | £36K | 2 |
| 31 Jul 2024 | -£22K | £7,441 | £7,744 | £32K | 2 |
| 31 Jul 2023 | -£21K | £1,695 | £2,860 | £26K | 2 |
| 31 Jul 2022 | -£1,419 | £14K | £14K | £19K | 2 |
| 31 Jul 2021 | £3,435 | £19K | £19K | £18K | 2 |
| 31 Jul 2020 | £653 | £8,581 | £8,856 | £11K | 2 |
| 31 Jul 2019 | £332 | £2,616 | £2,891 | £5,263 | 2 |
| 31 Jul 2018 | £491 | £2,153 | £2,676 | £5,006 | 2 |
| 31 Jul 2017 | £660 | £1,912 | £4,597 | 2 | |
| 31 Jul 2016 | £773 | £138 | £3,825 |
Where Box Security Ltd is registered
The registered office is in Dartford (DA1), in the Dartford local authority area, South East. Show DA1 1UP on a map.
Other trade companies in DA1
- Unit 6 Bespoke LtdSpecialist contractors
- Smartlifting LtdBuilders
- Degrees Bespoke Finishes LtdPlasterers
- A & A Electrical and Refrigeration LtdBuilders
- Elm Servicing LtdMachinery repair and installation
- WND Refrigeration LimitedPlumbers and heating engineers
- Moore Flooring and Sons LtdFloor and wall tilers
- Kinergy Systems LtdElectricians
What happens if Box Security 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 April 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 May 2027 to 31 May 2027 | £150 |
| 1 to 3 months late | 1 Jun 2027 to 31 Jul 2027 | £375 |
| 3 to 6 months late | 1 Aug 2027 to 31 Oct 2027 | £750 |
| More than 6 months late | From 1 Nov 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Aug 2027 | £200 |
| 3 months late | 31 Oct 2027 | another £200 |
| 6 months late | 31 Jan 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jul 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
- 02563687
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 29 November 1990 (35 years ago)
- Registered office
- Concord House, 41 Overy Street, Dartford, Kent, DA1 1UP
- Nature of business
- Electrical installation (SIC 43210)
- Year end
- 31 July (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 July 2025
- Last confirmation statement
- 22 November 2025
Filing notes for electrical contractors
Electrical contracting companies are often a director plus a van and tools. Most fall within the micro-entity rules, so the accounts filed at Companies House are short, and the CT600 carries the tax detail.
Similar companies in Dartford
Other active electrical contractors registered in Dartford.
- Brayland Electrical Ltd2021
- BRH Installations Limited2007
- Bright World Electrical Limited2017
- Bring Solutions Ltd2017
- Byatt Electrical Limited2008
- C and C Electrical Contractors Limited2007
- C D K Installations Ltd2019
- C D K Maintenance Ltd2026
All electrical contractors in Dartford · All trades in Dartford · Electricians across the UK
Frequently asked questions
When are Box Security Ltd's accounts due?
Box Security Ltd's next accounts are due at Companies House by 30 April 2027 (in 200 days), covering the period to 31 July 2026.
When is Box Security Ltd's CT600 due?
The CT600 for the period to 31 July 2026 is due at HMRC by 31 July 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 May 2027.
Is Box Security Ltd still trading?
Box Security 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 Box Security Ltd do?
Box Security Ltd is registered under Electrical installation (SIC 43210).
How old is Box Security Ltd?
Box Security Ltd was incorporated on 29 November 1990, 35 years ago.
What is the penalty if Box Security 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 Box Security 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.