- Companies
- Plumbers and heating engineers
- Croydon
- LJ Welding & Mechanical Services Ltd
LJ Welding & Mechanical Services Ltd
- Company number
- 09876571
- Incorporated
- 17 Nov 201510 years trading
- Registered office
- 838 Wickham Road, Croydon, CR0 8ED
- Nature of business
- Plumbing, heat and air-conditioning installation; Other specialised construction activities n.e.c.
LJ Welding & Mechanical Services Ltd is a 10-year-old private limited company registered in Croydon, company number 09876571, one of 122 plumbing and heating companies in Croydon. Its next accounts are due at Companies House on 31 August 2027, and the CT600 for the period to 30 November 2026 is due at HMRC on 30 November 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 £28K (+29.9%) on the year before, to £123K.
- Net assets rose in 8 of 9 year-on-year comparisons on record.
- Current assets of £130K against £9,703 owed within a year: more than 10 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 |
|---|---|---|---|---|---|
| 30 Nov 2025 | £123K | £130K | £9,703 | 0 | |
| 30 Nov 2024 | £94K | £116K | £23K | 0 | |
| 30 Nov 2023 | £87K | £93K | £8,347 | 0 | |
| 30 Nov 2022 | £130K | £161K | £34K | 0 | |
| 30 Nov 2021 | £78K | £112K | £37K | 0 | |
| 30 Nov 2020 | £67K | £77K | £6,770 | 0 | |
| 30 Nov 2019 | £42K | £67K | £19K | 0 | |
| 30 Nov 2018 | £30K | £50K | £30K | 1 | |
| 30 Nov 2017 | £27K | £48K | £33K | 0 | |
| 30 Nov 2016 | £16K | £42K | £27K |
Where LJ Welding & Mechanical Services Ltd is registered
The registered office is in Croydon (CR0), in the Croydon local authority area, London. Show CR0 8ED on a map.
Other trade companies in CR0
- Linx Render LimitedBuilders
- Horus Properly Renovation LimitedBuilders
- Auto & Repairs London LtdMotor traders
- Diyour-Self LtdFloor and wall tilers
- Premier Kitchen Installations LimitedJoiners and carpenters
- VR1 Construct LtdBuilders
- Simply Exterior Solutions LimitedCleaning companies
- Kok Cons LtdBuilders
Also registered at this address
13 other companies use the same registered office as LJ Welding & Mechanical Services Ltd.
- Atop LimitedBuilders
- Autopro Motors LimitedMechanics and garages
- Brockley Auto Services LimitedMechanics and garages
- Brockley MOT Centre LimitedMechanics and garages
- DMR Vehicle Care LtdMechanics and garages
- Eko Flow Plumbing & Heating LtdPlumbers and heating engineers
- Fort Manor Developments LimitedProperty developers
- Husky Heating LtdPlumbers and heating engineers
- JPS & Associates LtdPainters and decorators
- Knight Property Maintenance LtdBuilders
- Property Maintenance London (VR) LimitedFinishing trades
- Teknic Refrigeration LtdMachinery repair and installation
- Twenty07 Development LtdProperty developers
What happens if LJ Welding & Mechanical 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 31 August 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Sep 2027 to 30 Sep 2027 | £150 |
| 1 to 3 months late | 1 Oct 2027 to 30 Nov 2027 | £375 |
| 3 to 6 months late | 1 Dec 2027 to 29 Feb 2028 | £750 |
| More than 6 months late | From 1 Mar 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Dec 2027 | £200 |
| 3 months late | 29 Feb 2028 | another £200 |
| 6 months late | 30 May 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Nov 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
- 09876571
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 17 November 2015 (10 years ago)
- Registered office
- 838 Wickham Road, Croydon, CR0 8ED
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
Other specialised construction activities n.e.c. (SIC 43999) - Year end
- 30 November (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 November 2025
- Last confirmation statement
- 16 November 2025
Filing notes for plumbing and heating companies
Plumbing and heating companies frequently work under CIS for main contractors and also directly for homeowners, so turnover can mix CIS and non-CIS income.
Similar companies in Croydon
Other active plumbing and heating companies registered in Croydon.
- LJR Plumbing and Heating Limited2022
- London Plumbing Services Ltd2021
- Mathi Builders Ltd2025
- MB Facilities Limited2017
- Mge London Ltd2026
- Modern Airconditioning Limited2013
- MPS Ac & Renewables Ltd2026
- MW Plumbing & Heating Services Limited2018
All plumbing and heating companies in Croydon · All trades in Croydon · Plumbers and heating engineers across the UK
Frequently asked questions
When are LJ Welding & Mechanical Services Ltd's accounts due?
LJ Welding & Mechanical Services Ltd's next accounts are due at Companies House by 31 August 2027 (in 322 days), covering the period to 30 November 2026.
When is LJ Welding & Mechanical Services Ltd's CT600 due?
The CT600 for the period to 30 November 2026 is due at HMRC by 30 November 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 September 2027.
Is LJ Welding & Mechanical Services Ltd still trading?
LJ Welding & Mechanical 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 LJ Welding & Mechanical Services Ltd do?
LJ Welding & Mechanical Services Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220); Other specialised construction activities n.e.c. (SIC 43999).
How old is LJ Welding & Mechanical Services Ltd?
LJ Welding & Mechanical Services Ltd was incorporated on 17 November 2015, 10 years ago.
What is the penalty if LJ Welding & Mechanical 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 LJ Welding & Mechanical 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.