- Companies
- Electricians
- Surbiton
- TJN Management Limited
TJN Management Limited
- Company number
- 11172826
- Incorporated
- 26 Jan 20188 years trading
- Registered office
- 18 Aalexandra Drive, Alexandra Drive, Surbiton, KT5 9AA
- Nature of business
- Electrical installation; Plumbing, heat and air-conditioning installation; Joinery installation; Other building completion and finishing
TJN Management Limited is a 8-year-old private limited company registered in Surbiton, company number 11172826, one of 35 electrical contractors in Surbiton. Its next accounts are due at Companies House on 31 October 2027, and the CT600 for the period to 31 January 2027 is due at HMRC on 31 January 2028.
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 £35K (-39.8%) on the year before, to £53K.
- Net assets rose in 4 of 7 year-on-year comparisons on record.
- Current assets of £39K against £14K owed within a year: 2.8 times cover.
- 1 employee on average, up from -1 the year before.
- Balance sheets on record for 8 years, 2019 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Jan 2026 | £53K | £39K | £14K | 1 | |
| 31 Jan 2025 | £88K | £96K | £1,513 | -1 | |
| 31 Jan 2024 | £158K | £89K | £6,004 | -1 | |
| 31 Jan 2023 | £148K | £181K | £14K | -1 | |
| 31 Jan 2022 | £246K | £245K | £51K | 0 | |
| 31 Jan 2021 | £105K | £173K | £8,907 | -1 | |
| 31 Jan 2020 | £83K | £114K | £32K | ||
| 31 Jan 2019 | £29K | £44K | £14K |
Where TJN Management Limited is registered
The registered office is in Surbiton (KT5), in the Kingston upon Thames local authority area, London. Show KT5 9AA on a map.
Other trade companies in KT5
- We Got You Covered Roofing & Driveways LimitedRoofers
- G&K Houston Services LtdBuilders
- Pipe IT LtdPlumbers and heating engineers
- May Living Spaces LtdBuilders
- Devicefix Tech LtdRepair services
- Voltanko Electricians LtdElectricians
- Wa Plumbing LtdPlumbers and heating engineers
- Constantin Gugean LtdBuilders
What happens if TJN Management 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 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Nov 2027 to 30 Nov 2027 | £150 |
| 1 to 3 months late | 1 Dec 2027 to 31 Jan 2028 | £375 |
| 3 to 6 months late | 1 Feb 2028 to 30 Apr 2028 | £750 |
| More than 6 months late | From 1 May 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Feb 2028 | £200 |
| 3 months late | 30 Apr 2028 | another £200 |
| 6 months late | 31 Jul 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jan 2029 | 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
- 11172826
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 26 January 2018 (8 years ago)
- Registered office
- 18 Aalexandra Drive, Alexandra Drive, Surbiton, KT5 9AA
- Nature of business
- Electrical installation (SIC 43210)
Plumbing, heat and air-conditioning installation (SIC 43220)
Joinery installation (SIC 43320)
Other building completion and finishing (SIC 43390) - Year end
- 31 January (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 January 2026
- Last confirmation statement
- 25 January 2026
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 Surbiton
Other active electrical contractors registered in Surbiton.
- TN London Ltd2026
- Valiant Electric Facilities Limited2010
- Voltanko Electricians Ltd2026
- Adf Property Services Ltd2021
- Alpine Electrical Contractors Ltd2018
- Am General Construction Ltd2023
- Cassia 1 Holdings Limited2020
- Cbec Ltd2010
All electrical contractors in Surbiton · All trades in Surbiton · Electricians across the UK
Frequently asked questions
When are TJN Management Limited's accounts due?
TJN Management Limited's next accounts are due at Companies House by 31 October 2027 (in 383 days), covering the period to 31 January 2027.
When is TJN Management Limited's CT600 due?
The CT600 for the period to 31 January 2027 is due at HMRC by 31 January 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 November 2027.
Is TJN Management Limited still trading?
TJN Management 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 TJN Management Limited do?
TJN Management Limited is registered under Electrical installation (SIC 43210); Plumbing, heat and air-conditioning installation (SIC 43220); Joinery installation (SIC 43320); Other building completion and finishing (SIC 43390).
How old is TJN Management Limited?
TJN Management Limited was incorporated on 26 January 2018, 8 years ago.
What is the penalty if TJN Management 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 TJN Management 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.