- Companies
- Electricians
- Chelmsford
- Aj Fire and Security Ltd
Aj Fire and Security Ltd
- Company number
- 05431416
- Incorporated
- 21 Apr 200521 years trading
- Registered office
- Unit 25 Waterhouse Business Centre, 2 Cromar Way, Chelmsford, Essex, CM1 2QE
- Nature of business
- Electrical installation
Aj Fire and Security Ltd is a 21-year-old private limited company registered in Chelmsford, company number 05431416, one of 160 electrical contractors in Chelmsford. Its next accounts are due at Companies House on 31 January 2028, and the CT600 for the period to 30 April 2027 is due at HMRC on 30 April 2028.
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 £22K (+27.3%) on the year before, to £105K.
- Net assets rose in 7 of 9 year-on-year comparisons on record.
- Current assets of £202K against £149K owed within a year: 1.4 times cover.
- 6 employees on average, down from 7 the year before.
- Balance sheets on record for 10 years, 2017 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Apr 2026 | £105K | £128K | £202K | £149K | 6 |
| 30 Apr 2025 | £82K | £66K | £149K | £100K | 7 |
| 30 Apr 2024 | £60K | £97K | £217K | £176K | 5 |
| 30 Apr 2023 | £32K | £28K | £88K | £65K | 5 |
| 30 Apr 2022 | £15K | £32K | £86K | £77K | 5 |
| 30 Apr 2021 | £16K | £83K | £113K | £58K | 3 |
| 30 Apr 2020 | £17K | £10K | £52K | £37K | 3 |
| 30 Apr 2019 | £4,215 | £6,361 | £44K | £41K | 2 |
| 30 Apr 2018 | £3,457 | £2,887 | £43K | £41K | 1 |
| 30 Apr 2017 | £209 | £8,844 | £46K | £48K | 1 |
Where Aj Fire and Security Ltd is registered
The registered office is in Chelmsford (CM1), in the Chelmsford local authority area, East of England. Show CM1 2QE on a map.
Other trade companies in CM1
- Restovex LimitedCleaning companies
- Unseen Connection Services LimitedElectricians
- Ardenrich Engineering LimitedCivil engineering
- Old Guy Handyman LtdFinishing trades
- Marlow Properties & Maintenance LimitedFinishing trades
- Castle Ground Care LimitedLandscapers and gardeners
- Jcgenix Sol LtdFinishing trades
- Pure Landscapes LimitedLandscapers and gardeners
What happens if Aj Fire and 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 31 January 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Feb 2028 to 29 Feb 2028 | £150 |
| 1 to 3 months late | 1 Mar 2028 to 30 Apr 2028 | £375 |
| 3 to 6 months late | 1 May 2028 to 31 Jul 2028 | £750 |
| More than 6 months late | From 1 Aug 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 May 2028 | £200 |
| 3 months late | 30 Jul 2028 | another £200 |
| 6 months late | 30 Oct 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Apr 2029 | 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
- 05431416
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 21 April 2005 (21 years ago)
- Registered office
- Unit 25 Waterhouse Business Centre, 2 Cromar Way, Chelmsford, Essex, CM1 2QE
- Nature of business
- Electrical installation (SIC 43210)
- Year end
- 30 April (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 April 2026
- Last confirmation statement
- 1 May 2026
- Previous names
- Aj Fire Limited (until 29 Jan 2014)
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 Chelmsford
Other active electrical contractors registered in Chelmsford.
- Ajs FM Ltd2016
- Alliance Renewables Limited2025
- Am Control Services Limited2021
- Ambient Electrical Services Limited2001
- Ample Electrical Services Limited2022
- Anglian Air & Power Ltd2026
- Apex Technical Services Ltd2022
- Aquaria Limited2018
All electrical contractors in Chelmsford · All trades in Chelmsford · Electricians across the UK
Frequently asked questions
When are Aj Fire and Security Ltd's accounts due?
Aj Fire and Security Ltd's next accounts are due at Companies House by 31 January 2028 (in 475 days), covering the period to 30 April 2027.
When is Aj Fire and Security Ltd's CT600 due?
The CT600 for the period to 30 April 2027 is due at HMRC by 30 April 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 February 2028.
Is Aj Fire and Security Ltd still trading?
Aj Fire and 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 Aj Fire and Security Ltd do?
Aj Fire and Security Ltd is registered under Electrical installation (SIC 43210).
How old is Aj Fire and Security Ltd?
Aj Fire and Security Ltd was incorporated on 21 April 2005, 21 years ago.
What is the penalty if Aj Fire and 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 Aj Fire and 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.