- Companies
- Electricians
- Colchester
- Lock Electrical Limited
Lock Electrical Limited
- Company number
- 01237182
- Incorporated
- 11 Dec 197550 years trading
- Registered office
- Ricklands, Nayland, Colchester, Essex, CO6 4NG
- Nature of business
- Electrical installation
Lock Electrical Limited is a 50-year-old private limited company registered in Colchester, company number 01237182, one of 209 electrical contractors in Colchester. 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 £20K (-3.3%) on the year before, to £585K.
- Net assets rose in 5 of 9 year-on-year comparisons on record.
- Current assets of £485K against £72K owed within a year: 6.7 times cover.
- 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 Dec 2025 | £585K | £181K | £485K | £72K | 0 |
| 31 Dec 2024 | £605K | £234K | £498K | £61K | 12 |
| 31 Dec 2023 | £624K | £344K | £634K | £176K | 14 |
| 31 Dec 2022 | £528K | £205K | £488K | £139K | 14 |
| 31 Dec 2021 | £430K | £204K | £482K | £128K | 16 |
| 31 Dec 2020 | £250K | £170K | £294K | £130K | 14 |
| 31 Dec 2019 | £227K | £114K | £231K | £105K | 14 |
| 31 Dec 2018 | £231K | £131K | £256K | £105K | 15 |
| 31 Dec 2017 | £222K | £156K | £380K | £241K | 15 |
| 31 Dec 2016 | £272K | £118K | £438K | £241K | 17 |
Where Lock Electrical Limited is registered
The registered office is in Colchester (CO6), in the Babergh local authority area, East of England. Show CO6 4NG on a map.
Other trade companies in CO6
- RKPR Commercial Roofing LtdRoofers
- GGS Infrastructure LtdCivil engineering
- Fordham Eco Park LtdProperty developers
- PNS Architectural Glazing Specialists LtdGlaziers
- Caddytech Conversions LtdMechanics and garages
- Jeri Construction LimitedBuilders
- KHC Contracts LimitedBuilders
- Colne Valley Motor Company LimitedMotor traders
What happens if Lock Electrical 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 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
- 01237182
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 11 December 1975 (50 years ago)
- Registered office
- Ricklands, Nayland, Colchester, Essex, CO6 4NG
- Nature of business
- Electrical installation (SIC 43210)
- Year end
- 31 December (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 December 2025
- Last confirmation statement
- 11 December 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 Colchester
Other active electrical contractors registered in Colchester.
- Luke Southwell Limited2012
- Lyons Power Ltd2019
- M Raymond Electrical Ltd2010
- M&L Insulation Contractors Limited2025
- Mains 2 Power Electrical Limited2006
- Mayfield Es Limited2018
- MCBS Electrical Limited2007
- MGS Electrical Installations Limited2001
All electrical contractors in Colchester · All trades in Colchester · Electricians across the UK
Frequently asked questions
When are Lock Electrical Limited's accounts due?
Lock Electrical Limited's next accounts are due at Companies House by 30 September 2027 (in 353 days), covering the period to 31 December 2026.
When is Lock Electrical Limited'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 Lock Electrical Limited still trading?
Lock Electrical 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 Lock Electrical Limited do?
Lock Electrical Limited is registered under Electrical installation (SIC 43210).
How old is Lock Electrical Limited?
Lock Electrical Limited was incorporated on 11 December 1975, 50 years ago.
What is the penalty if Lock Electrical 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 Lock Electrical 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.