- Companies
- Finishing trades
- London
- KSJ Contractors Limited
KSJ Contractors Limited
- Company number
- 09575372
- Incorporated
- 5 May 201511 years trading
- Registered office
- 37 Lombard Street, ( 6TH Floor), London, EC3V 9BQ
- Nature of business
- Other building completion and finishing
KSJ Contractors Limited is a 11-year-old private limited company registered in London, company number 09575372, one of 3,947 building finishing companies in London. Its next accounts are due at Companies House on 28 February 2027, and the CT600 for the period to 31 May 2026 is due at HMRC on 31 May 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 £3,298 (+19.8%) on the year before, to £20K.
- Net assets rose in 6 of 9 year-on-year comparisons on record.
- Current assets of £64K against £63K owed within a year: 1.0 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 |
|---|---|---|---|---|---|
| 31 May 2025 | £20K | £64K | £63K | 1 | |
| 31 May 2024 | £17K | £56K | £54K | 1 | |
| 31 May 2023 | £1,382 | £79K | £80K | 1 | |
| 31 May 2022 | £37K | £110K | £67K | 1 | |
| 31 May 2021 | £854 | £18K | £34K | 1 | |
| 31 May 2020 | £255 | £41K | £57K | 1 | |
| 31 May 2019 | £25K | £51K | £37K | 1 | |
| 31 May 2018 | £5,270 | ||||
| 31 May 2017 | £212 | £17K | £21K | ||
| 31 May 2016 | £1,425 | £6,221 | £11K | £10K |
Who runs and owns KSJ Contractors Limited
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officer
| Name | Role | Appointed |
|---|---|---|
| K*** S*** | Director | May 2015 |
Person with significant control
Where KSJ Contractors Limited is registered
The registered office is in London (EC3V), in the City of London local authority area, London. Show EC3V 9BQ on a map.
Other trade companies in EC3V
- Rekondition LtdRepair services
- Revora Cleaning & Hygiene Solutions LtdCleaning companies
- Kingston Leeds LimitedProperty developers
- Riverside Cleaning Group LtdCleaning companies
- Milman Services LtdInstallers
- F and F Electrical Services LtdElectricians
- Lilyame LimitedProperty developers
- Truewatt LtdElectricians
Also registered at this address
6 other companies use the same registered office as KSJ Contractors Limited.
- Apex Interiors Builders LtdBuilders
- Bright Facilities LimitedFacilities management
- Duck & Bear LtdProperty developers
- GK Autosecurity LtdMotor traders
- Monolith Electrical Services LtdElectricians
- Truewatt LtdElectricians
What happens if KSJ Contractors 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 28 February 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Mar 2027 to 31 Mar 2027 | £150 |
| 1 to 3 months late | 1 Apr 2027 to 31 May 2027 | £375 |
| 3 to 6 months late | 1 Jun 2027 to 31 Aug 2027 | £750 |
| More than 6 months late | From 1 Sep 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jun 2027 | £200 |
| 3 months late | 31 Aug 2027 | another £200 |
| 6 months late | 30 Nov 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 May 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
- 09575372
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 5 May 2015 (11 years ago)
- Registered office
- 37 Lombard Street, ( 6TH Floor), London, EC3V 9BQ
- Nature of business
- Other building completion and finishing (SIC 43390)
- Year end
- 31 May (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 May 2025
- Last confirmation statement
- 29 December 2025
- Previous names
- Spinola Design & Build Limited (until 22 Dec 2020)
Filing notes for building finishing companies
Finishing trade companies cover a wide range of work. Most are micro-entities with simple accounts and a straightforward CT600.
Similar companies in London
Other active building finishing companies registered in London.
- KSK Building Services Ltd2013
- KT Engineering Ltd2022
- KT Stone Ltd2026
- KT-Con Ltd2015
- KWB London Limited2012
- Kwikgreen Limited2015
- Kyte Construction Services Ltd.2023
- Kyulev Interiors Design Ltd2025
All building finishing companies in London · All trades in London · Finishing trades across the UK
Frequently asked questions
When are KSJ Contractors Limited's accounts due?
KSJ Contractors Limited's next accounts are due at Companies House by 28 February 2027 (in 138 days), covering the period to 31 May 2026.
When is KSJ Contractors Limited's CT600 due?
The CT600 for the period to 31 May 2026 is due at HMRC by 31 May 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 March 2027.
Is KSJ Contractors Limited still trading?
KSJ Contractors 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 KSJ Contractors Limited do?
KSJ Contractors Limited is registered under Other building completion and finishing (SIC 43390).
How old is KSJ Contractors Limited?
KSJ Contractors Limited was incorporated on 5 May 2015, 11 years ago.
Who runs KSJ Contractors Limited?
KSJ Contractors Limited has 1 active director, the longest-serving appointed in May 2015. Their names and service addresses are on the Companies House register.
Who owns KSJ Contractors Limited?
One person or company has significant control of KSJ Contractors Limited: an individual (owns 75% or more of the shares).
What is the penalty if KSJ Contractors 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 KSJ Contractors 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.