- Companies
- Electricians
- Brentwood
- Complex Electrical Services Ltd
Complex Electrical Services Ltd
- Company number
- 09600335
- Incorporated
- 20 May 201511 years trading
- Registered office
- Create Business Hub, Ground Floor 5 Rayleigh Road, Hutton, Brentwood, Essex, CM13 1AB
- Nature of business
- Electrical installation
Complex Electrical Services Ltd is a 11-year-old private limited company registered in Brentwood, company number 09600335, one of 101 electrical contractors in Brentwood. Its next accounts are due at Companies House on 28 February 2027, and the CT600 for the period to 30 May 2026 is due at HMRC on 30 May 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 £38 (+0.6%) on the year before, to £6,855.
- Net assets rose in 6 of 9 year-on-year comparisons on record.
- No employees reported for the latest year (directors are often not counted as employees).
- 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 May 2025 | £6,855 | £6,618 | £410 | 0 | |
| 31 May 2024 | £6,817 | £6,896 | £6,896 | £941 | 0 |
| 31 May 2023 | £5,085 | £3,052 | £4,584 | £649 | 0 |
| 31 May 2022 | £7,331 | £5,403 | £6,828 | £934 | 0 |
| 31 May 2021 | £6,160 | £6,499 | £7,820 | £3,351 | 1 |
| 31 May 2020 | -£981 | £610 | £1,931 | £2,912 | 0 |
| 31 May 2019 | £4,649 | £437 | £4,212 | 2 | |
| 31 May 2018 | £1,174 | £6,188 | £5,014 | 2 | |
| 31 May 2017 | £3,136 | £8,121 | £4,985 | 2 | |
| 31 May 2016 | £27 | £1,940 | £1,913 |
Where Complex Electrical Services Ltd is registered
The registered office is in Brentwood (CM13), in the Brentwood local authority area, East of England. Show CM13 1AB on a map.
Other trade companies in CM13
- Van & Car Self Drive LtdMotor traders
- Marsh Harrier Developments LtdProperty developers
- Motor Dealer Sales LtdMotor traders
- Electrical PN LtdElectricians
- Torrtec LtdPlumbers and heating engineers
- Flushed Through Drainage Services LtdPlumbers and heating engineers
- RJFD Electrical LtdCivil engineering
- Welsted LtdJoiners and carpenters
Shared registered office
80 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 Complex Electrical Services 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 28 February 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Mar 2027 to 31 Mar 2027 | £150 |
| 1 to 3 months late | 1 Apr 2027 to 31 May 2027 | £375 |
| 3 to 6 months late | 1 Jun 2027 to 31 Aug 2027 | £750 |
| More than 6 months late | From 1 Sep 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 31 May 2027 | £200 |
| 3 months late | 30 Aug 2027 | another £200 |
| 6 months late | 30 Nov 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 May 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
- 09600335
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 20 May 2015 (11 years ago)
- Registered office
- Create Business Hub, Ground Floor 5 Rayleigh Road, Hutton, Brentwood, Essex, CM13 1AB
- Nature of business
- Electrical installation (SIC 43210)
- Year end
- 30 May (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 May 2025
- Last confirmation statement
- 20 May 2026
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.
- Copperfield Electrical Limited2024
- Crescent Electrical Services Ltd2014
- Crestmount Electrical & Mechanical Ltd2013
- CSM Installations Limited2008
- CSM London Holdings Ltd2017
- DRC Electrical Ltd2026
- Durasol Renewables & Security Ltd2025
- Ec Controls Ltd2025
All electrical contractors in Brentwood · All trades in Brentwood · Electricians across the UK
Frequently asked questions
When are Complex Electrical Services Ltd's accounts due?
Complex Electrical Services Ltd's next accounts are due at Companies House by 28 February 2027 (in 138 days), covering the period to 30 May 2026.
When is Complex Electrical Services Ltd's CT600 due?
The CT600 for the period to 30 May 2026 is due at HMRC by 30 May 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 March 2027.
Is Complex Electrical Services Ltd still trading?
Complex Electrical Services 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 Complex Electrical Services Ltd do?
Complex Electrical Services Ltd is registered under Electrical installation (SIC 43210).
How old is Complex Electrical Services Ltd?
Complex Electrical Services Ltd was incorporated on 20 May 2015, 11 years ago.
What is the penalty if Complex Electrical Services 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 Complex Electrical Services 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.