- Companies
- Installers
- Gillingham
- The CJM Group (South East) Ltd
The CJM Group (South East) Ltd
- Company number
- 12407617
- Incorporated
- 16 Jan 20206 years trading
- Registered office
- 66A High Street, Rainham, Gillingham, ME8 7JF
- Nature of business
- Other construction installation
The CJM Group (South East) Ltd is a 6-year-old private limited company registered in Gillingham, company number 12407617, one of 48 installation companies (insulation, lifts, shutters and similar) in Gillingham. Its next accounts are due at Companies House on 30 September 2027, and the CT600 for the period to 31 December 2026 is due at HMRC on 31 December 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 £27K (-56.1%) on the year before, to £21K.
- Net assets rose in 3 of 5 year-on-year comparisons on record.
- 2 employees on average during the year.
- Balance sheets on record for 6 years, 2021 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Dec 2025 | £21K | £0 | £14K | 2 | |
| 31 Dec 2024 | £48K | £45K | £13K | 2 | |
| 31 Dec 2023 | £94K | £25K | £0 | 1 | |
| 31 Dec 2022 | £93K | £35K | £11K | 1 | |
| 31 Dec 2021 | £33K | £4,627 | £24K | 1 | |
| 31 Jan 2021 | £26K | £13K | 1 |
Where The CJM Group (South East) Ltd is registered
The registered office is in Gillingham (ME8), in the Medway local authority area, South East. Show ME8 7JF on a map.
Other trade companies in ME8
- National Fire Services LimitedElectricians
- TC Mechanical Engineering LtdMechanics and garages
- Reset and Refresh Kent LtdCleaning companies
- Primestone Surfacing LtdCivil engineering
- GMS Autos LtdMechanics and garages
- Mmu Design & Build LtdFinishing trades
- Jpe Drylining LtdPlasterers
- Quick Clean Kent LtdCleaning companies
Shared registered office
34 companies on our pages use this registered office address. An address shared this widely is usually an accountant's office or a company formation agent's service address, not where the business trades from.
What happens if The CJM Group (South East) 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 September 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Oct 2027 to 31 Oct 2027 | £150 |
| 1 to 3 months late | 1 Nov 2027 to 31 Dec 2027 | £375 |
| 3 to 6 months late | 1 Jan 2028 to 31 Mar 2028 | £750 |
| More than 6 months late | From 1 Apr 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jan 2028 | £200 |
| 3 months late | 31 Mar 2028 | another £200 |
| 6 months late | 30 Jun 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Dec 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
- 12407617
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 16 January 2020 (6 years ago)
- Registered office
- 66A High Street, Rainham, Gillingham, ME8 7JF
- Nature of business
- Other construction installation (SIC 43290)
- Year end
- 31 December (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 December 2025
- Last confirmation statement
- 13 January 2026
- Previous names
- CJM Security Services Ltd (until 9 Sep 2025)
CJM Sercurity Services Ltd (until 17 Jan 2020)
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 Gillingham
Other active installation companies (insulation, lifts, shutters and similar) registered in Gillingham.
- Traxen Ltd2018
- Valley Maintenance and Building Service Ltd2019
- Vamj Construction Ltd2019
- Aerial Solutions (South East) Limited2010
- Artius Interiors + Ltd2026
- Associated Garage Doors Limited2019
- Blackspark Fab & Fitters Ltd2026
- Blue 10 Installations Limited2016
All installation companies (insulation, lifts, shutters and similar) in Gillingham · All trades in Gillingham · Installers across the UK
Frequently asked questions
When are The CJM Group (South East) Ltd's accounts due?
The CJM Group (South East) Ltd's next accounts are due at Companies House by 30 September 2027 (in 352 days), covering the period to 31 December 2026.
When is The CJM Group (South East) Ltd's CT600 due?
The CT600 for the period to 31 December 2026 is due at HMRC by 31 December 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 October 2027.
Is The CJM Group (South East) Ltd still trading?
The CJM Group (South East) 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 The CJM Group (South East) Ltd do?
The CJM Group (South East) Ltd is registered under Other construction installation (SIC 43290).
How old is The CJM Group (South East) Ltd?
The CJM Group (South East) Ltd was incorporated on 16 January 2020, 6 years ago.
What is the penalty if The CJM Group (South East) 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 The CJM Group (South East) 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.