- Companies
- Machinery repair and installation
- Harrow
- Jec(London) Limited
Jec(London) Limited
- Company number
- 12391616
- Incorporated
- 8 Jan 20206 years trading
- Registered office
- 9A Aberdeen Road, Harrow, HA3 7NF
- Nature of business
- Installation of industrial machinery and equipment; Other cleaning services
Jec(London) Limited is a 6-year-old private limited company registered in Harrow, company number 12391616, one of 51 machinery repair and installation companies in Harrow. Its next accounts are due at Companies House on 30 December 2026, and the CT600 for the period to 30 March 2026 is due at HMRC on 30 March 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 £3,272 (-23%) on the year before, to £11K.
- Net assets rose in 3 of 4 year-on-year comparisons on record.
- Current assets of £15K against £4,872 owed within a year: 3.1 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 5 years, 2021 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | £11K | £131 | £15K | £4,872 | 1 |
| 31 Mar 2024 | £14K | £3,047 | £16K | £2,875 | 1 |
| 31 Mar 2023 | £10K | £4,847 | £13K | £3,979 | 1 |
| 31 Mar 2022 | £3,954 | £4,482 | £1,488 | 1 | |
| 31 Mar 2021 | £318 | £101 | £1,619 | 1 |
Where Jec(London) Limited is registered
The registered office is in Harrow (HA3), in the Harrow local authority area, London. Show HA3 7NF on a map.
Other trade companies in HA3
- M&M Team Solutions LimitedCleaning companies
- Asr234 LimitedCivil engineering
- Shine Bright With NV LtdMechanics and garages
- Direct Sparks LtdMachinery repair and installation
- Meral Decoration & Maintenance LtdPainters and decorators
- Add22 LtdCivil engineering
- Floyd Cleaners LimitedCleaning companies
- Amalia&Ioana LimitedBuilders
What happens if Jec(London) 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 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 31 Dec 2026 to 30 Jan 2027 | £150 |
| 1 to 3 months late | 31 Jan 2027 to 30 Mar 2027 | £375 |
| 3 to 6 months late | 31 Mar 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 31 Mar 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Mar 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
- 12391616
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 8 January 2020 (6 years ago)
- Registered office
- 9A Aberdeen Road, Harrow, HA3 7NF
- Nature of business
- Installation of industrial machinery and equipment (SIC 33200)
Other cleaning services (SIC 81299) - Year end
- 30 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 7 January 2026
Filing notes for machinery repair and installation companies
Machinery repair and installation companies often carry parts stock and specialist tools, and many work on contracts that span the year end.
Similar companies in Harrow
Other active machinery repair and installation companies registered in Harrow.
- JP Engineering Solutions Ltd2025
- Kmy Solutions Ltd2026
- LDN Electronics Ltd2020
- Lytestyle Designs Limited2007
- Magna Shiprepair & Consulting Agency Limited2021
- Maskho Limited2012
- Masuk Aero Ltd2026
- Matthews&Co Industrial Maintenance Contractors Limited2019
All machinery repair and installation companies in Harrow · All trades in Harrow · Machinery repair and installation across the UK
Frequently asked questions
When are Jec(London) Limited's accounts due?
Jec(London) Limited's next accounts are due at Companies House by 30 December 2026 (in 78 days), covering the period to 30 March 2026.
When is Jec(London) Limited's CT600 due?
The CT600 for the period to 30 March 2026 is due at HMRC by 30 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 31 December 2026.
Is Jec(London) Limited still trading?
Jec(London) 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 Jec(London) Limited do?
Jec(London) Limited is registered under Installation of industrial machinery and equipment (SIC 33200); Other cleaning services (SIC 81299).
How old is Jec(London) Limited?
Jec(London) Limited was incorporated on 8 January 2020, 6 years ago.
What is the penalty if Jec(London) 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 Jec(London) 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.