- Companies
- Specialist contractors
- Southampton
- Martin & Porter Co. Limited
Martin & Porter Co. Limited
- Company number
- 04079568
- Incorporated
- 27 Sep 200026 years trading
- Registered office
- 7 Raymond Close, West End, Southampton, SO30 2HF
- Nature of business
- Other specialised construction activities n.e.c.
Martin & Porter Co. Limited is a 26-year-old private limited company registered in Southampton, company number 04079568, one of 202 specialist construction companies in Southampton. 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.
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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 £2,032 (+7.1%) on the year before, to £31K.
- Net assets rose in 5 of 9 year-on-year comparisons on record.
- Current assets of £98K against £67K owed within a year: 1.5 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 10 years, 2017 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2026 | £31K | £98K | £67K | 2 | |
| 31 Mar 2025 | £29K | £16K | £86K | £60K | 2 |
| 31 Mar 2024 | £6,642 | £1,674 | £29K | £25K | 2 |
| 31 Mar 2023 | £12K | £49K | £76K | £68K | 2 |
| 31 Mar 2022 | £5,393 | £31K | £63K | £63K | 2 |
| 31 Mar 2021 | £15K | £26K | £77K | £69K | 2 |
| 31 Mar 2020 | £12K | £53K | £54K | £51K | 2 |
| 31 Mar 2019 | £652 | £25K | £33K | £44K | 2 |
| 31 Mar 2018 | £8,723 | £12K | £46K | £48K | 3 |
| 31 Mar 2017 | £20K | £31K | £93K | £88K | 3 |
Who runs and owns Martin & Porter Co. Limited
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officers (2)
| Name | Role | Appointed |
|---|---|---|
| M*** H*** | Director | Dec 2000 |
| E*** H*** | Secretary | Jan 2010 |
3 former officers
| Name | Role | Appointed | Left |
|---|---|---|---|
| C*** N*** | Secretary | Dec 2000 | Dec 2009 |
| Rwl Registrars Limited | Corporate Nominee Secretary | Sep 2000 | Dec 2000 |
| Bonusworth Limited | Nominee director (company) | Sep 2000 | Dec 2000 |
People with significant control (2)
Public contracts won
Martin & Porter Co. Limited has 3 public sector contract awards on record; the ones with their own published value total £387K, from 2020 to 2022. Source: Contracts Finder and Find a Tender award notices.
Awards by year
Main buyers
- Winchester City Council3 awards
| Buyer | Contract | Value | Awarded |
|---|---|---|---|
| Winchester City Council | Stuart Crescent reinstatement following fire | £280K | 13 Jan 2022 |
| Winchester City Council | Renewal of Fascias and Soffits at Garnier Park, Wickham | £57K | 13 Jan 2021 |
| Winchester City Council | Chiltern Court Common Room Conversion | £50K | 2 Mar 2020 |
Where Martin & Porter Co. Limited is registered
The registered office is in Southampton (SO30), in the Eastleigh local authority area, South East. Show SO30 2HF on a map.
Other trade companies in SO30
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- JG Projects 02 LtdFinishing trades
- GW Installations LimitedGlaziers
- Winterstone Systems LtdElectricians
- Stay Sure Drives and Patios LtdLandscapers and gardeners
- Epc Upgrade Group LtdElectricians
- Ross Maynard Projects LtdProperty developers
- Picca Compliance LimitedElectricians
What happens if Martin & Porter Co. 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
- 04079568
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 27 September 2000 (26 years ago)
- Registered office
- 7 Raymond Close, West End, Southampton, SO30 2HF
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 March 2026
- Last confirmation statement
- 29 August 2026
Filing notes for specialist construction companies
Specialist contractors often work under CIS for main contractors. Retentions held back by the customer still count towards turnover once the work is done.
Similar companies in Southampton
Other active specialist construction companies registered in Southampton.
- Mastercraft Decorative Mouldings Limited2010
- Matarson Limited2026
- Maughan General Maintenance Limited2000
- MCR Building Services Limited2003
- MDS Water Services Limited2008
- Melhuish Marine Services Limited2015
- Metro Monitoring Ltd2012
- MHK Draughting Services Limited2007
All specialist construction companies in Southampton · All trades in Southampton · Specialist contractors across the UK
Frequently asked questions
When are Martin & Porter Co. Limited's accounts due?
Martin & Porter Co. Limited's next accounts are due at Companies House by 31 December 2027 (in 444 days), covering the period to 31 March 2027.
When is Martin & Porter Co. 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 Martin & Porter Co. Limited still trading?
Martin & Porter Co. 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 Martin & Porter Co. Limited do?
Martin & Porter Co. Limited is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Martin & Porter Co. Limited?
Martin & Porter Co. Limited was incorporated on 27 September 2000, 26 years ago.
Who runs Martin & Porter Co. Limited?
Martin & Porter Co. Limited has 1 active director, the longest-serving appointed in Dec 2000. Their names and service addresses are on the Companies House register.
Who owns Martin & Porter Co. Limited?
2 people or companies have significant control of Martin & Porter Co. Limited: an individual (owns 25% to 50% of the shares); an individual (owns 50% to 75% of the shares).
Has Martin & Porter Co. Limited won public sector contracts?
Yes. Martin & Porter Co. Limited has 3 contract awards from public bodies on Contracts Finder and Find a Tender (those with their own published value total £387K), most recently from Winchester City Council.
What is the penalty if Martin & Porter Co. 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 Martin & Porter Co. 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.