- Companies
- Machinery repair and installation
- Derry
- Gulfstream Marine Limited
Gulfstream Marine Limited
- Company number
- NI058450
- Incorporated
- 14 Mar 200620 years trading
- Registered office
- At the Offices of Claremount, 43 Clarendon Street, Derry, BT48 7ER
- Nature of business
- Repair and maintenance of ships and boats; Retail sale of sports goods, fishing gear, camping goods, boats and bicycles
Gulfstream Marine Limited is a 20-year-old private limited company registered in Derry, company number NI058450, one of 9 machinery repair and installation companies in Derry. Its next accounts are due at Companies House on 31 May 2027, and the CT600 for the period to 31 August 2026 is due at HMRC on 31 August 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 £10K (+49%) on the year before, to -£11K.
- Net assets rose in 7 of 9 year-on-year comparisons on record.
- Current assets of £137K against £30K owed within a year: 4.5 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 10 years, 2015 to 2024.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Aug 2024 | -£11K | £21K | £137K | £30K | 2 |
| 31 Aug 2023 | -£21K | £48K | £196K | £52K | 2 |
| 31 Aug 2022 | -£30K | £136K | £210K | £59K | 1 |
| 31 Aug 2021 | -£99K | £45K | £150K | £39K | 2 |
| 31 Aug 2020 | -£146K | £5,322 | £100K | £35K | 2 |
| 31 Aug 2019 | -£151K | £1,962 | £52K | £22K | |
| 31 Aug 2018 | -£155K | £2,911 | £32K | £5,379 | |
| 31 Mar 2017 | -£151K | £873 | £34K | £3,346 | |
| 31 Mar 2016 | -£157K | £582 | £35K | £9,566 | |
| 31 Mar 2015 | -£155K | £892 | £32K | £4,568 |
Where Gulfstream Marine Limited is registered
The registered office is in Derry (BT48), in the Derry City and Strabane local authority area, Northern Ireland. Show BT48 7ER on a map.
Other trade companies in BT48
- Neat & Nurtured Vics Cleaning LimitedCleaning companies
- Ked Brick & Blockwork LtdBuilders
- Zapcars LtdMotor traders
- TMC Electrics LtdElectricians
- Northern Diesels LtdMotor traders
- Coyle Reclamation & Salvage LtdSpecialist contractors
- George MCG Mechanical LtdElectricians
- KK Electrical Solutions Ireland LimitedElectricians
Also registered at this address
2 other companies use the same registered office as Gulfstream Marine Limited.
- Jar Construction LimitedCivil engineering
- O'Donnell Properties (Ireland) LimitedProperty developers
What happens if Gulfstream Marine 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 May 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jun 2027 to 30 Jun 2027 | £150 |
| 1 to 3 months late | 1 Jul 2027 to 31 Aug 2027 | £375 |
| 3 to 6 months late | 1 Sep 2027 to 30 Nov 2027 | £750 |
| More than 6 months late | From 1 Dec 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Sep 2027 | £200 |
| 3 months late | 30 Nov 2027 | another £200 |
| 6 months late | 29 Feb 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Aug 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
- NI058450
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 14 March 2006 (20 years ago)
- Registered office
- At the Offices of Claremount, 43 Clarendon Street, Derry, BT48 7ER
- Nature of business
- Repair and maintenance of ships and boats (SIC 33150)
Retail sale of sports goods, fishing gear, camping goods, boats and bicycles (SIC 47640) - Year end
- 31 August (accounting reference date)
- Accounts type
- Unaudited abridged
- Last accounts made up to
- 31 August 2025
- Last confirmation statement
- 14 March 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 Derry
Other active machinery repair and installation companies registered in Derry.
- KT Electrical & Security Ltd2024
- Od's Garage Ltd2019
- PWP Complete Services Ltd2017
- Softdecks Ltd2023
- Universal Power Services Ltd2014
- CDP Gas Limited2023
- Ecoride Repairs Ltd2024
- Emerald Plant Training Ltd2025
All machinery repair and installation companies in Derry · All trades in Derry · Machinery repair and installation across the UK
Frequently asked questions
When are Gulfstream Marine Limited's accounts due?
Gulfstream Marine Limited's next accounts are due at Companies House by 31 May 2027 (in 230 days), covering the period to 31 August 2026.
When is Gulfstream Marine Limited's CT600 due?
The CT600 for the period to 31 August 2026 is due at HMRC by 31 August 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 June 2027.
Is Gulfstream Marine Limited still trading?
Gulfstream Marine 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 Gulfstream Marine Limited do?
Gulfstream Marine Limited is registered under Repair and maintenance of ships and boats (SIC 33150); Retail sale of sports goods, fishing gear, camping goods, boats and bicycles (SIC 47640).
How old is Gulfstream Marine Limited?
Gulfstream Marine Limited was incorporated on 14 March 2006, 20 years ago.
What is the penalty if Gulfstream Marine 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 Gulfstream Marine 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.