- Companies
- Machinery repair and installation
- Twickenham
- CT Marine Service & Software Ltd
CT Marine Service & Software Ltd
- Company number
- 12569979
- Incorporated
- 23 Apr 20206 years trading
- Registered office
- First Floor, 6 York Street, Twickenham, TW1 3LD
- Nature of business
- Repair of electronic and optical equipment; Business and domestic software development; Other information technology service activities; Other business support service activities n.e.c.
CT Marine Service & Software Ltd is a 6-year-old private limited company registered in Twickenham, company number 12569979, one of 21 machinery repair and installation companies in Twickenham. Its next accounts are due at Companies House on 31 January 2027, and the CT600 for the period to 30 April 2026 is due at HMRC on 30 April 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 £152 on the year before, to -£152.
- 2 employees on average, up from 1 the year before.
- Balance sheets on record for 4 years, 2022 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Apr 2025 | -£152 | £0 | £0 | £7,652 | 2 |
| 30 Apr 2024 | £0 | £347 | £347 | £7,847 | 1 |
| 30 Apr 2023 | 0 | ||||
| 30 Apr 2022 | 0 |
Where CT Marine Service & Software Ltd is registered
The registered office is in Twickenham (TW1), in the Richmond upon Thames local authority area, London. Show TW1 3LD on a map.
Other trade companies in TW1
- Absmartek LimitedPlumbers and heating engineers
- GHD Remedials LtdFinishing trades
- Harmeet Enterprise LimitedBuilders
- MR Floor Pro LtdFloor and wall tilers
- La Garage House LtdMechanics and garages
- Em Property Renovations LtdBuilders
- Aco Properties Management LtdSpecialist contractors
- Handy Sherpa Construction LimitedBuilders
Also registered at this address
4 other companies use the same registered office as CT Marine Service & Software Ltd.
- Bytimeproject LtdSpecialist contractors
- Moment Vision Construction LtdProperty developers
- Moritech Robot Technologies UK LtdMachinery repair and installation
- Vnox LtdBuilders
What happens if CT Marine Service & Software 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 31 January 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Feb 2027 to 28 Feb 2027 | £150 |
| 1 to 3 months late | 1 Mar 2027 to 30 Apr 2027 | £375 |
| 3 to 6 months late | 1 May 2027 to 31 Jul 2027 | £750 |
| More than 6 months late | From 1 Aug 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 May 2027 | £200 |
| 3 months late | 30 Jul 2027 | another £200 |
| 6 months late | 30 Oct 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Apr 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
- 12569979
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 23 April 2020 (6 years ago)
- Registered office
- First Floor, 6 York Street, Twickenham, TW1 3LD
- Nature of business
- Repair of electronic and optical equipment (SIC 33130)
Business and domestic software development (SIC 62012)
Other information technology service activities (SIC 62090)
Other business support service activities n.e.c. (SIC 82990) - Year end
- 30 April (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 April 2025
- Last confirmation statement
- 11 March 2026
- Previous names
- N Ozgul Ltd (until 12 Feb 2024)
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 Twickenham
Other active machinery repair and installation companies registered in Twickenham.
- Eel Pie Island Slipways Limited1983
- Electroline Limited1979
- Emc Marine Ltd2022
- Exelixis Services Limited2020
- Francis H. Newman (Shipyards) Limited1954
- George Wilson Metering Limited2024
- Maintenance Lupsa Limited2020
- Mecha Engineering Limited2023
All machinery repair and installation companies in Twickenham · All trades in Twickenham · Machinery repair and installation across the UK
Frequently asked questions
When are CT Marine Service & Software Ltd's accounts due?
CT Marine Service & Software Ltd's next accounts are due at Companies House by 31 January 2027 (in 110 days), covering the period to 30 April 2026.
When is CT Marine Service & Software Ltd's CT600 due?
The CT600 for the period to 30 April 2026 is due at HMRC by 30 April 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 February 2027.
Is CT Marine Service & Software Ltd still trading?
CT Marine Service & Software 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 CT Marine Service & Software Ltd do?
CT Marine Service & Software Ltd is registered under Repair of electronic and optical equipment (SIC 33130); Business and domestic software development (SIC 62012); Other information technology service activities (SIC 62090); Other business support service activities n.e.c. (SIC 82990).
How old is CT Marine Service & Software Ltd?
CT Marine Service & Software Ltd was incorporated on 23 April 2020, 6 years ago.
What is the penalty if CT Marine Service & Software 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 CT Marine Service & Software 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.