- Companies
- Electricians
- London
- JJ London Services Limited
JJ London Services Limited
- Company number
- 12934727
- Incorporated
- 7 Oct 20206 years trading
- Registered office
- 4314 Schwartz Wharf, 92 White Post Lane, London, E9 5AA
- Nature of business
- Electrical installation; Buying and selling of own real estate; Management of real estate on a fee or contract basis; Security systems service activities
JJ London Services Limited is a 6-year-old private limited company registered in London, company number 12934727, one of 3,448 electrical contractors in London. Its next accounts are due at Companies House on 31 October 2026, and its first CT600 is due at HMRC on 31 October 2026.
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 £1,624 (+293.1%) on the year before, to £2,178.
- Net assets rose in 2 of 3 year-on-year comparisons on record.
- Current assets of £17K against £15K owed within a year: 1.1 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 4 years, 2021 to 2024.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Oct 2024 | £2,178 | £8,491 | £17K | £15K | 1 |
| 31 Oct 2023 | £554 | £8,599 | £9,088 | 1 | |
| 31 Oct 2022 | £419 | £9,460 | £9,460 | £11K | 1 |
| 31 Oct 2021 | £618 | £4,409 | £5,611 | £6,318 | 1 |
Where JJ London Services Limited is registered
The registered office is in London (E9), in the Tower Hamlets local authority area, London. Show E9 5AA on a map.
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- Campbellconstruct LtdGlaziers
- North Stone Roofing & Guttering LtdRoofers
What happens if JJ London Services 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 October 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Nov 2026 to 30 Nov 2026 | £150 |
| 1 to 3 months late | 1 Dec 2026 to 31 Jan 2027 | £375 |
| 3 to 6 months late | 1 Feb 2027 to 30 Apr 2027 | £750 |
| More than 6 months late | From 1 May 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Feb 2027 | £200 |
| 3 months late | 30 Apr 2027 | another £200 |
| 6 months late | 31 Jul 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jan 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
- 12934727
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 7 October 2020 (6 years ago)
- Registered office
- 4314 Schwartz Wharf, 92 White Post Lane, London, E9 5AA
- Nature of business
- Electrical installation (SIC 43210)
Buying and selling of own real estate (SIC 68100)
Management of real estate on a fee or contract basis (SIC 68320)
Security systems service activities (SIC 80200) - Year end
- 31 October (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 October 2024
- Last confirmation statement
- 6 October 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 London
Other active electrical contractors registered in London.
- JJC Electrical Ltd2020
- JJG Electrics Ltd2020
- JJG Solar Limited2024
- JK Electrics and Maintenance London Limited2023
- Jkes Electrical Ltd2026
- Jki Group Ltd2011
- Jla Electrical London Limited2015
- JLB Contractors Ltd2026
All electrical contractors in London · All trades in London · Electricians across the UK
Frequently asked questions
When are JJ London Services Limited's accounts due?
JJ London Services Limited's next accounts are due at Companies House by 31 October 2026 (in 17 days), covering the period to 31 January 2026.
When is JJ London Services Limited's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 31 October 2025, due by 31 October 2026, and one for the period to 31 January 2026, due by 31 January 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is JJ London Services Limited still trading?
JJ London Services 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 JJ London Services Limited do?
JJ London Services Limited is registered under Electrical installation (SIC 43210); Buying and selling of own real estate (SIC 68100); Management of real estate on a fee or contract basis (SIC 68320); Security systems service activities (SIC 80200).
How old is JJ London Services Limited?
JJ London Services Limited was incorporated on 7 October 2020, 6 years ago.
What is the penalty if JJ London Services 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 JJ London Services 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.