- Companies
- Installers
- Southampton
- Intermarine Limited
Intermarine Limited
- Company number
- 03200735
- Incorporated
- 20 May 199630 years trading
- Registered office
- Fleming Court Leigh Road, Eastleigh, Southampton, Hampshire, SO50 9PD
- Nature of business
- Other construction installation; Other specialised construction activities n.e.c.
Intermarine Limited is a 30-year-old private limited company registered in Southampton, company number 03200735, one of 132 installation companies (insulation, lifts, shutters and similar) in Southampton. Its next accounts are due at Companies House on 30 September 2027, and the CT600 for the period to 31 December 2026 is due at HMRC on 31 December 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 £62K (+5.8%) on the year before, to £1.1M.
- Net assets rose in 9 of 9 year-on-year comparisons on record.
- 20 employees on average, up from 17 the year before.
- 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 Dec 2025 | £1.1M | £950K | £1.1M | 20 | |
| 31 Dec 2024 | £1.1M | £468K | £2.8M | £1.8M | 17 |
| 31 Dec 2023 | £979K | £1M | £2.6M | £1.6M | 15 |
| 31 Dec 2022 | £903K | £786K | £2.3M | £1.3M | 10 |
| 31 Dec 2021 | £778K | £663K | £1.5M | £575K | 12 |
| 31 Dec 2020 | £594K | £385K | £1.4M | £622K | 13 |
| 31 Dec 2019 | £578K | £62K | £977K | £434K | 13 |
| 31 Dec 2018 | £546K | £26K | £1M | £531K | 12 |
| 31 Dec 2017 | £353K | £12K | £966K | £674K | 12 |
| 31 Dec 2016 | £252K | £154K | £1M | £793K | 13 |
Public contracts won
Intermarine Limited has 3 public sector contract awards on record; the ones with their own published value total £1.1M, from 2022 to 2024. Source: Contracts Finder and Find a Tender award notices. For 1 of them the published figure is a shared or multi-year ceiling (a framework place, a multi-supplier award, or more than a small company could hold alone), so no value is shown. 2 of these were matched by the company's exact name because the notice gave no company number.
Awards by year
Main buyers
- KBS Maritime Limited1 award
- Dorset Council1 award
- Nottingham City Council1 award
| Buyer | Contract | Value | Awarded |
|---|---|---|---|
| KBS Maritime Limited | KBS/0124/T/MCS1/NK The KBS Multi Discipline Subcontractor Framework 2024 | Ceiling, not shown | 25 Oct 2024 |
| Dorset Council | Replacement of Weymouth Harbour Visitor Pontoons: A1-B8 and C1-C4 | £554K | 6 Oct 2022 |
| Nottingham City Council | CPU 4121 Colwick Marina Pontoon Replacement Phase 2 | £550K | 29 Jul 2022 |
Where Intermarine Limited is registered
The registered office is in Southampton (SO50), in the Eastleigh local authority area, South East. Show SO50 9PD on a map.
Other trade companies in SO50
- Chevron Homes LimitedBuilders
- Plymouth Construction & Roofing LtdRoofers
- Marley Roofing and Guttering LtdRoofers
- Gutter and Glass LimitedCleaning companies
- Zap Clean Systems LimitedCleaning companies
- Pro Spray Hampshire LtdPainters and decorators
- National Trusted Vehicles LtdMotor traders
- Kuji Service LtdMachinery repair and installation
Also registered at this address
7 other companies use the same registered office as Intermarine Limited.
- Blache Helicopters Services LtdMachinery repair and installation
- Dave Eastman Construction LimitedFinishing trades
- David Ponting Commercials LimitedMechanics and garages
- Intermarine Enterprises LimitedSpecialist contractors
- Southampton Pier LimitedCivil engineering
- The Square Southampton LimitedProperty developers
- Vectis Horizon LimitedProperty developers
What happens if Intermarine 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 30 September 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Oct 2027 to 31 Oct 2027 | £150 |
| 1 to 3 months late | 1 Nov 2027 to 31 Dec 2027 | £375 |
| 3 to 6 months late | 1 Jan 2028 to 31 Mar 2028 | £750 |
| More than 6 months late | From 1 Apr 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jan 2028 | £200 |
| 3 months late | 31 Mar 2028 | another £200 |
| 6 months late | 30 Jun 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Dec 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
- 03200735
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 20 May 1996 (30 years ago)
- Registered office
- Fleming Court Leigh Road, Eastleigh, Southampton, Hampshire, SO50 9PD
- Nature of business
- Other construction installation (SIC 43290)
Other specialised construction activities n.e.c. (SIC 43999) - Year end
- 31 December (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 December 2025
- Last confirmation statement
- 20 May 2026
- Charges (mortgages)
- 2 outstanding of 6 registered
Filing notes for installation companies (insulation, lifts, shutters and similar)
Installation companies (insulation, lifts, shutters, solar and similar) often buy stock and equipment up front, so stock at the year end and capital allowances both affect the tax bill.
Similar companies in Southampton
Other active installation companies (insulation, lifts, shutters and similar) registered in Southampton.
- Ironclad Extraction Ltd2026
- J Wells Construction Ltd2024
- J&N Holdco Limited2020
- JWH Building Contractors Ltd2021
- L Byrne Brickwork and Building Ltd2025
- Landris Property Services Limited2010
- Legal & Management Services Limited2003
- Lemon Lumba Limited2021
All installation companies (insulation, lifts, shutters and similar) in Southampton · All trades in Southampton · Installers across the UK
Frequently asked questions
When are Intermarine Limited's accounts due?
Intermarine Limited's next accounts are due at Companies House by 30 September 2027 (in 353 days), covering the period to 31 December 2026.
When is Intermarine Limited's CT600 due?
The CT600 for the period to 31 December 2026 is due at HMRC by 31 December 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 October 2027.
Is Intermarine Limited still trading?
Intermarine 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 Intermarine Limited do?
Intermarine Limited is registered under Other construction installation (SIC 43290); Other specialised construction activities n.e.c. (SIC 43999).
How old is Intermarine Limited?
Intermarine Limited was incorporated on 20 May 1996, 30 years ago.
Has Intermarine Limited won public sector contracts?
Yes. Intermarine Limited has 3 contract awards from public bodies on Contracts Finder and Find a Tender (those with their own published value total £1.1M), most recently from KBS MARITIME LIMITED.
What is the penalty if Intermarine 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 Intermarine 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.