- Companies
- Machinery repair and installation
- Ramsgate
- C.J. Sinclair Limited
C.J. Sinclair Limited
- Company number
- 00751436
- Incorporated
- 26 Feb 196363 years trading
- Registered office
- Unit 27 Telegraph Hill Industrial Estate, Laundry Road Minster, Ramsgate, Kent, CT12 4HY
- Nature of business
- Repair of electrical equipment
C.J. Sinclair Limited is a 63-year-old private limited company registered in Ramsgate, company number 00751436, one of 20 machinery repair and installation companies in Ramsgate. Its next accounts are due at Companies House on 31 December 2027, and the CT600 for the period to 31 March 2027 is due at HMRC on 31 March 2028.
Key dates
Worked out from the year end and filing history on the Companies House register.
Is this your company?
File the accounts to Companies House and the CT600 to HMRC yourself with A.X.E.L Filing. One set of questions, both filings, £49 flat. No accountant, no subscription.
File for C.J. Sinclair LimitedOr get a reminder before each deadline
Free. We email you 60, 30, 14, 7 and 1 days before the accounts, CT600 and confirmation statement are due. Unsubscribe in one click.
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 £15K (-2.1%) on the year before, to £700K.
- Net assets rose in 6 of 7 year-on-year comparisons on record.
- Current assets of £1.3M against £618K owed within a year: 2.1 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- 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 Mar 2026 | £700K | £635K | £1.3M | £618K | 0 |
| 31 Mar 2025 | £715K | £490K | £974K | £266K | 22 |
| 31 Mar 2024 | £633K | £530K | £1M | £411K | 23 |
| 31 Mar 2023 | £485K | £611K | £1.2M | £665K | 29 |
| 31 Mar 2022 | £306K | £341K | £707K | £373K | 20 |
| 31 Mar 2021 | £224K | £227K | £549K | £285K | 19 |
| 31 Mar 2020 | £166K | £128K | £309K | £150K | 18 |
| 31 Mar 2019 | £129K | £124K | £412K | £289K | 18 |
Who runs and owns C.J. Sinclair Limited
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officers (4)
| Name | Role | Appointed |
|---|---|---|
| K*** S*** | Director | Apr 2005 |
| M*** S*** | Director | Feb 2013 |
| J*** S*** | Director | Nov 2023 |
| K*** S*** | Secretary | Jun 2002 |
5 former officers
| Name | Role | Appointed | Left |
|---|---|---|---|
| P*** S*** | Secretary | Jun 2002 | |
| B*** K*** | Director | Oct 2000 | |
| C*** S*** | Director | Dec 1999 | |
| N*** S*** | Director | Nov 2023 | |
| P*** S*** | Director | Mar 2005 |
People with significant control (3)
Where C.J. Sinclair Limited is registered
The registered office is in Ramsgate (CT12), in the Thanet local authority area, South East. Show CT12 4HY on a map.
Other trade companies in CT12
- Medz Estates LtdProperty developers
- Sturry Tyres MOT & Service Centre LimitedMechanics and garages
- Bec Projects LtdInstallers
- HR Project Homes LtdProperty developers
- Clements Plumbing and Heating Kent LtdPlumbers and heating engineers
- Beespoke Garden Rooms of Kent LtdBuilders
- LBF Cleaning Services LtdCleaning companies
- JM Rail LimitedCivil engineering
Also registered at this address
1 other company uses the same registered office as C.J. Sinclair Limited.
- What Tool LimitedMachinery repair and installation
What happens if C.J. Sinclair 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 December 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2028 to 31 Jan 2028 | £150 |
| 1 to 3 months late | 1 Feb 2028 to 31 Mar 2028 | £375 |
| 3 to 6 months late | 1 Apr 2028 to 30 Jun 2028 | £750 |
| More than 6 months late | From 1 Jul 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2028 | £200 |
| 3 months late | 30 Jun 2028 | another £200 |
| 6 months late | 30 Sep 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- 00751436
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 26 February 1963 (63 years ago)
- Registered office
- Unit 27 Telegraph Hill Industrial Estate, Laundry Road Minster, Ramsgate, Kent, CT12 4HY
- Nature of business
- Repair of electrical equipment (SIC 33140)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2026
- Last confirmation statement
- 19 July 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 Ramsgate
Other active machinery repair and installation companies registered in Ramsgate.
- Cable & Marine Ltd2021
- Dropza Logistics Limited2026
- Essp Ltd2025
- Hppa Limited2010
- HTW Limited2005
- Hydrogen Te (Manston) Ltd2023
- Hydrogen Te Kent Ltd2024
- JRHD Services Ltd2024
All machinery repair and installation companies in Ramsgate · All trades in Ramsgate · Machinery repair and installation across the UK
Frequently asked questions
When are C.J. Sinclair Limited's accounts due?
C.J. Sinclair Limited's next accounts are due at Companies House by 31 December 2027 (in 445 days), covering the period to 31 March 2027.
When is C.J. Sinclair Limited's CT600 due?
The CT600 for the period to 31 March 2027 is due at HMRC by 31 March 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2028.
Is C.J. Sinclair Limited still trading?
C.J. Sinclair 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 C.J. Sinclair Limited do?
C.J. Sinclair Limited is registered under Repair of electrical equipment (SIC 33140).
How old is C.J. Sinclair Limited?
C.J. Sinclair Limited was incorporated on 26 February 1963, 63 years ago.
Who runs C.J. Sinclair Limited?
C.J. Sinclair Limited has 3 active directors, the longest-serving appointed in Apr 2005. Their names and service addresses are on the Companies House register.
Who owns C.J. Sinclair Limited?
3 people or companies have significant control of C.J. Sinclair Limited: an individual (owns 25% to 50% of the shares); an individual (owns 25% to 50% of the shares); an individual (owns 25% to 50% of the shares).
What is the penalty if C.J. Sinclair 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 C.J. Sinclair 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.