- Companies
- Electricians
- Brentwood
- CSM Installations Limited
CSM Installations Limited
- Company number
- 06462443
- Incorporated
- 3 Jan 200818 years trading
- Registered office
- 101A Crow Green Road, Pilgrims Hatch, Brentwood, CM15 9RP
- Nature of business
- Electrical installation
CSM Installations Limited is a 18-year-old private limited company registered in Brentwood, company number 06462443, one of 101 electrical contractors in Brentwood. Its next accounts are due at Companies House on 31 October 2026, and the CT600 for the period to 31 January 2026 is due at HMRC on 31 January 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 £60K (-62.7%) on the year before, to £36K.
- Net assets rose in 3 of 7 year-on-year comparisons on record.
- Current assets of £238K against £48K owed within a year: 4.9 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 8 years, 2018 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Jan 2025 | £36K | £238K | £48K | 2 | |
| 31 Jan 2024 | £96K | £264K | £178K | 2 | |
| 31 Jan 2023 | £68K | £145K | £182K | £128K | 3 |
| 31 Jan 2022 | £136K | £102K | £301K | £182K | 3 |
| 31 Jan 2021 | £176K | £238K | £466K | £296K | 2 |
| 31 Jan 2020 | £66K | £39K | £238K | £176K | 2 |
| 31 Jan 2019 | £71K | £12K | £226K | £157K | 3 |
| 31 Jan 2018 | £68K | £206K | £338K | £272K | 3 |
Where CSM Installations Limited is registered
The registered office is in Brentwood (CM15), in the Brentwood local authority area, East of England. Show CM15 9RP on a map.
Other trade companies in CM15
- JJ Freeman Construction LtdGroundworks and demolition
- Sky Loft London LtdFinishing trades
- LDN Systems LtdRoofers
- LDN Traditional Roofing LtdRoofers
- Reactive Roofers LtdRoofers
- K.Fire.Safety LtdElectricians
- Elevation Roofing Group LimitedRoofers
- Krosshatch Creative Concepts LimitedProperty developers
Shared registered office
37 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 CSM Installations Limited 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 October 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Nov 2026 to 30 Nov 2026 | £150 |
| 1 to 3 months late | 1 Dec 2026 to 31 Jan 2027 | £375 |
| 3 to 6 months late | 1 Feb 2027 to 30 Apr 2027 | £750 |
| More than 6 months late | From 1 May 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Feb 2027 | £200 |
| 3 months late | 30 Apr 2027 | another £200 |
| 6 months late | 31 Jul 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jan 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
- 06462443
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 3 January 2008 (18 years ago)
- Registered office
- 101A Crow Green Road, Pilgrims Hatch, Brentwood, CM15 9RP
- Nature of business
- Electrical installation (SIC 43210)
- Year end
- 31 January (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 January 2025
- Last confirmation statement
- 16 October 2025
- Previous names
- Luminaire Limited (until 8 Sep 2010)
Superstead Limited (until 12 Mar 2008)
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 Brentwood
Other active electrical contractors registered in Brentwood.
- CSM London Holdings Ltd2017
- DRC Electrical Ltd2026
- Durasol Renewables & Security Ltd2025
- Ec Controls Ltd2025
- Electric V Limited2020
- Electrical Excellence Services Limited2016
- Electrical Project Solutions Ltd2023
- Electriserve Ltd2015
All electrical contractors in Brentwood · All trades in Brentwood · Electricians across the UK
Frequently asked questions
When are CSM Installations Limited's accounts due?
CSM Installations Limited's next accounts are due at Companies House by 31 October 2026 (in 18 days), covering the period to 31 January 2026.
When is CSM Installations Limited's CT600 due?
The CT600 for the period to 31 January 2026 is due at HMRC by 31 January 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 November 2026.
Is CSM Installations Limited still trading?
CSM Installations Limited 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 CSM Installations Limited do?
CSM Installations Limited is registered under Electrical installation (SIC 43210).
How old is CSM Installations Limited?
CSM Installations Limited was incorporated on 3 January 2008, 18 years ago.
What is the penalty if CSM Installations Limited 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 CSM Installations Limited 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.