- Companies
- Installers
- Brentwood
- GMJ Windows Doors and Locks Limited
GMJ Windows Doors and Locks Limited
- Company number
- 08584190
- Incorporated
- 25 Jun 201313 years trading
- Registered office
- c/o Ridgewell & Boreham, 24A Crown Street, Brentwood, Essex, CM14 4BA
- Nature of business
- Other construction installation
GMJ Windows Doors and Locks Limited is a 13-year-old private limited company registered in Brentwood, company number 08584190, one of 60 installation companies (insulation, lifts, shutters and similar) in Brentwood. Its next accounts are due at Companies House on 31 March 2027, and the CT600 for the period to 30 June 2026 is due at HMRC on 30 June 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 £23K (+651.1%) on the year before, to £26K.
- Net assets rose in 7 of 9 year-on-year comparisons on record.
- Current assets of £48K against £36K owed within a year: 1.3 times cover.
- 1 employee on average during the year.
- 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 |
|---|---|---|---|---|---|
| 30 Jun 2025 | £26K | £38K | £48K | £36K | 1 |
| 30 Jun 2024 | £3,525 | £41K | £49K | £54K | 1 |
| 30 Jun 2023 | £2,475 | £13K | £14K | £23K | 1 |
| 30 Jun 2022 | £1,417 | £2,017 | £6,677 | £5,464 | 1 |
| 30 Jun 2021 | £1,284 | £17K | £22K | £6,237 | 1 |
| 30 Jun 2020 | £859 | £2,184 | £10K | £9,944 | 1 |
| 30 Jun 2019 | £4,019 | £8,071 | £16K | £13K | 1 |
| 30 Jun 2018 | £1,821 | £13K | £12K | ||
| 30 Jun 2017 | £1,222 | £16K | £15K | ||
| 30 Jun 2016 | £15K | £23K | £7,931 |
Who runs and owns GMJ Windows Doors and Locks Limited
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officers (2)
| Name | Role | Appointed |
|---|---|---|
| G*** J*** | Director | Jun 2013 |
| Ridgewell & Boreham Accountants | Secretary (company) | Jul 2014 |
1 former officer
| Name | Role | Appointed | Left |
|---|---|---|---|
| C*** J*** | Secretary | Jun 2013 | Jul 2014 |
Person with significant control
Where GMJ Windows Doors and Locks Limited is registered
The registered office is in Brentwood (CM14), in the Brentwood local authority area, East of England. Show CM14 4BA on a map.
Other trade companies in CM14
- Solis Signature LimitedProperty developers
- Dubtech Spares LtdMotor traders
- Master Decor LtdPainters and decorators
- Glan Project Services LtdCleaning companies
- Honeybee Design and Interiors LtdInstallers
- Essex Tyres and MOT LimitedMechanics and garages
- Kava Collective LtdMachinery repair and installation
- Elite Roofing & Property Care LtdRoofers
Also registered at this address
14 other companies use the same registered office as GMJ Windows Doors and Locks Limited.
- Driveline Drivers LimitedBuilders
- F Y I Services LimitedFinishing trades
- Fine Oak Building LimitedBuilders
- Fitted Furniture Creations LimitedInstallers
- Hillway Construction LimitedBuilders
- J Berry Contracts LimitedJoiners and carpenters
- JWD Heating & Plumbing Services LtdPlumbers and heating engineers
- Katybuild LimitedSpecialist contractors
- Logic Plumbing and Heating LtdPlumbers and heating engineers
- M Duggan & Sons LimitedSpecialist contractors
- McCarty & Smith LtdInstallers
- Sal's Engineering LtdBuilders
- The Specialist Homes Group LtdProperty developers
- Vynar LimitedBuilders
What happens if GMJ Windows Doors and Locks 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 March 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Apr 2027 to 30 Apr 2027 | £150 |
| 1 to 3 months late | 1 May 2027 to 30 Jun 2027 | £375 |
| 3 to 6 months late | 1 Jul 2027 to 30 Sep 2027 | £750 |
| More than 6 months late | From 1 Oct 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jul 2027 | £200 |
| 3 months late | 30 Sep 2027 | another £200 |
| 6 months late | 30 Dec 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Jun 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
- 08584190
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 25 June 2013 (13 years ago)
- Registered office
- c/o Ridgewell & Boreham, 24A Crown Street, Brentwood, Essex, CM14 4BA
- Nature of business
- Other construction installation (SIC 43290)
- Year end
- 30 June (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 June 2025
- Last confirmation statement
- 17 June 2026
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 Brentwood
Other active installation companies (insulation, lifts, shutters and similar) registered in Brentwood.
- Graftpay Ltd2021
- Home Counties Traffic Management Limited2025
- Honeybee Design and Interiors Ltd2026
- JS Fusion Fabrication Ltd2024
- JSB Construction (South East) Ltd2021
- Kreed Lift Services Limited2026
- Langford Bridge Construction Limited2024
- M&S Construction Solutions Ltd2025
All installation companies (insulation, lifts, shutters and similar) in Brentwood · All trades in Brentwood · Installers across the UK
Frequently asked questions
When are GMJ Windows Doors and Locks Limited's accounts due?
GMJ Windows Doors and Locks Limited's next accounts are due at Companies House by 31 March 2027 (in 169 days), covering the period to 30 June 2026.
When is GMJ Windows Doors and Locks Limited's CT600 due?
The CT600 for the period to 30 June 2026 is due at HMRC by 30 June 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 April 2027.
Is GMJ Windows Doors and Locks Limited still trading?
GMJ Windows Doors and Locks 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 GMJ Windows Doors and Locks Limited do?
GMJ Windows Doors and Locks Limited is registered under Other construction installation (SIC 43290).
How old is GMJ Windows Doors and Locks Limited?
GMJ Windows Doors and Locks Limited was incorporated on 25 June 2013, 13 years ago.
Who runs GMJ Windows Doors and Locks Limited?
GMJ Windows Doors and Locks Limited has 1 active director, the longest-serving appointed in Jun 2013. Their names and service addresses are on the Companies House register.
Who owns GMJ Windows Doors and Locks Limited?
One person or company has significant control of GMJ Windows Doors and Locks Limited: an individual (owns 75% or more of the shares).
What is the penalty if GMJ Windows Doors and Locks 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 GMJ Windows Doors and Locks 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.