- Companies
- Finishing trades
- Staines
- J C Slark Ltd
J C Slark Ltd
- Company number
- 07802143
- Incorporated
- 7 Oct 201115 years trading
- Registered office
- 12 Knightsbridge Crescent, Staines, Middlesex, TW18 2QR
- Nature of business
- Other building completion and finishing; Support activities to performing arts
J C Slark Ltd is a 15-year-old private limited company registered in Staines, company number 07802143, one of the UK's building finishing companies. Its next accounts are due at Companies House on 30 June 2027, and the CT600 for the period to 30 September 2026 is due at HMRC on 30 September 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 £676 (-35.7%) on the year before, to £1,216.
- Net assets rose in 5 of 9 year-on-year comparisons on record.
- Current assets of £21K against £24K owed within a year: 0.9 times cover.
- 2 employees 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 |
|---|---|---|---|---|---|
| 30 Sep 2025 | £1,216 | £9,223 | £21K | £24K | 2 |
| 30 Sep 2024 | £1,892 | £3,674 | £18K | £18K | 2 |
| 30 Sep 2023 | £331 | £3,356 | £4,156 | £6,189 | 2 |
| 30 Sep 2022 | £4,014 | £12K | £12K | £8,711 | 2 |
| 30 Sep 2021 | £704 | £24K | £32K | £15K | 1 |
| 30 Sep 2020 | £3,713 | £2,272 | £2,272 | £3,215 | 1 |
| 30 Sep 2019 | £6,153 | £2,891 | £9,211 | £8,877 | 1 |
| 30 Sep 2018 | £2,166 | £1,678 | £5,050 | £10K | 1 |
| 30 Sep 2017 | £916 | £371 | £1,366 | £8,581 | 1 |
| 30 Sep 2016 | £665 | £128 | £1,123 | £11K |
Where J C Slark Ltd is registered
The registered office is in Staines (TW18), in the Spelthorne local authority area, South East. Show TW18 2QR on a map.
Other trade companies in TW18
- Cleenspace LtdCleaning companies
- Querceto Property LtdProperty developers
- Deep Property Group LtdProperty developers
- Icm Power LtdMachinery repair and installation
- Staines Scooter LtdMotor traders
- JBS All-Trades LtdPlumbers and heating engineers
- Almisor Solar LtdBuilders
- Greenzone Cooling LtdPlumbers and heating engineers
What happens if J C Slark 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 30 June 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jul 2027 to 31 Jul 2027 | £150 |
| 1 to 3 months late | 1 Aug 2027 to 30 Sep 2027 | £375 |
| 3 to 6 months late | 1 Oct 2027 to 31 Dec 2027 | £750 |
| More than 6 months late | From 1 Jan 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Oct 2027 | £200 |
| 3 months late | 30 Dec 2027 | another £200 |
| 6 months late | 30 Mar 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Sep 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
- 07802143
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 7 October 2011 (15 years ago)
- Registered office
- 12 Knightsbridge Crescent, Staines, Middlesex, TW18 2QR
- Nature of business
- Other building completion and finishing (SIC 43390)
Support activities to performing arts (SIC 90020) - Year end
- 30 September (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 September 2025
- Last confirmation statement
- 7 October 2025
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 Staines
Other active building finishing companies registered in Staines.
All building finishing companies in Staines · All trades in Staines · Finishing trades across the UK
Frequently asked questions
When are J C Slark Ltd's accounts due?
J C Slark Ltd's next accounts are due at Companies House by 30 June 2027 (in 261 days), covering the period to 30 September 2026.
When is J C Slark Ltd's CT600 due?
The CT600 for the period to 30 September 2026 is due at HMRC by 30 September 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 July 2027.
Is J C Slark Ltd still trading?
J C Slark 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 J C Slark Ltd do?
J C Slark Ltd is registered under Other building completion and finishing (SIC 43390); Support activities to performing arts (SIC 90020).
How old is J C Slark Ltd?
J C Slark Ltd was incorporated on 7 October 2011, 15 years ago.
What is the penalty if J C Slark 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 J C Slark 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.