- Companies
- Civil engineering
- Portsmouth
- T.Couzens & Sons Limited
T.Couzens & Sons Limited
- Company number
- 00256491
- Incorporated
- 16 May 193195 years trading
- Registered office
- Lake House 2 Port Way, Port Solent, Portsmouth, Hampshire, PO6 4TY
- Nature of business
- Construction of other civil engineering projects n.e.c.
T.Couzens & Sons Limited is a 95-year-old private limited company registered in Portsmouth, company number 00256491, one of 74 civil engineering contractors in Portsmouth. Its next accounts are due at Companies House on 31 December 2026, and the CT600 for the period to 31 March 2026 is due at HMRC on 31 March 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 £58K (-3%) on the year before, to £1.9M.
- Net assets rose in 4 of 9 year-on-year comparisons on record.
- Current assets of £1.7M against £162K owed within a year: more than 10 times cover.
- 10 employees on average during the year.
- 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 Mar 2025 | £1.9M | £318K | £1.7M | £162K | 10 |
| 31 Mar 2024 | £1.9M | £280K | £1.8M | £142K | 10 |
| 31 Mar 2023 | £2M | £354K | £1.9M | £131K | 10 |
| 31 Mar 2022 | £2.1M | £429K | £2M | £176K | 10 |
| 31 Mar 2021 | £2.1M | £432K | £2M | £180K | 10 |
| 31 Mar 2020 | £2.1M | £397K | £2.1M | £228K | 10 |
| 31 Mar 2019 | £2.1M | £419K | £2M | £205K | 10 |
| 31 Mar 2018 | £2.1M | £691K | £1.9M | £179K | 10 |
| 31 Mar 2017 | £1.9M | £531K | £1.9M | £299K | 10 |
| 31 Mar 2016 | £1.6M | £366K | £1.7M | £281K |
Who runs and owns T.Couzens & Sons Limited
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officers (3)
| Name | Role | Appointed |
|---|---|---|
| T*** C*** | Director | before Oct 1992 |
| A*** C*** | Director | Jun 2007 |
| Mc Secretaries Limited | Secretary (company) | Sep 2004 |
2 former officers
| Name | Role | Appointed | Left |
|---|---|---|---|
| T*** C*** | Secretary | Sep 2004 | |
| T*** C*** | Director | Sep 2004 |
People with significant control (2)
Charges (secured borrowing)
1 of 7 registered charges are outstanding. A charge is security a lender takes over a company's assets, typically for a loan, mortgage or asset finance.
| Lender | Status | Registered |
|---|---|---|
| A private lender | Outstanding | Sep 2010 |
| A private lender | Satisfied Apr 2015 | May 2014 |
| Basing Partners Limited | Satisfied Jul 2007 | Mar 2007 |
| Lloyds TSB Bank PLC | Satisfied Jan 2007 | Oct 2000 |
| Lloyds TSB Bank PLC | Satisfied Jul 2004 | Oct 2000 |
| Lloyds TSB Bank PLC | Satisfied Jul 2004 | Sep 2000 |
| Lloyds TSB Bank PLC | Satisfied Jul 2004 | May 2000 |
Where T.Couzens & Sons Limited is registered
The registered office is in Portsmouth (PO6), in the Portsmouth local authority area, South East. Show PO6 4TY on a map.
Other trade companies in PO6
- Bellagio Partners LtdBuilders
- Cpenw LtdMachinery repair and installation
- Marla Brickwork & Construction LtdProperty developers
- Miracles in Metal LtdMechanics and garages
- FH Fire & Electrical LtdElectricians
- Thomcore LimitedSpecialist contractors
- JMS Southern LtdElectricians
- The Motum Group LtdSpecialist contractors
Shared registered office
55 companies on our pages use this registered office address. An address shared this widely is usually an accountant's office or a company formation agent's service address, not where the business trades from.
What happens if T.Couzens & Sons 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 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- 00256491
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 16 May 1931 (95 years ago)
- Registered office
- Lake House 2 Port Way, Port Solent, Portsmouth, Hampshire, PO6 4TY
- Nature of business
- Construction of other civil engineering projects n.e.c. (SIC 42990)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 12 October 2025
- Charges (mortgages)
- 1 outstanding of 7 registered
Filing notes for civil engineering contractors
Civil engineering contractors usually carry plant and machinery, so capital allowances (the annual investment allowance and the main pool) do much of the work in the corporation tax computation.
Similar companies in Portsmouth
Other active civil engineering contractors registered in Portsmouth.
- The Fairway Advisory Ltd2026
- Tota Steelfixing Ltd2018
- Utility Delta Business Services Limited2021
- Volt Base Group Ltd2023
- W G Wilson & Sons Builders Limited2007
- Wardsdiving Limited2026
- White Space Innovating Designs Ltd2025
- Wings Civil Engineering Limited2019
All civil engineering contractors in Portsmouth · All trades in Portsmouth · Civil engineering across the UK
Frequently asked questions
When are T.Couzens & Sons Limited's accounts due?
T.Couzens & Sons Limited's next accounts are due at Companies House by 31 December 2026 (in 79 days), covering the period to 31 March 2026.
When is T.Couzens & Sons Limited's CT600 due?
The CT600 for the period to 31 March 2026 is due at HMRC by 31 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2027.
Is T.Couzens & Sons Limited still trading?
T.Couzens & Sons 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 T.Couzens & Sons Limited do?
T.Couzens & Sons Limited is registered under Construction of other civil engineering projects n.e.c. (SIC 42990).
How old is T.Couzens & Sons Limited?
T.Couzens & Sons Limited was incorporated on 16 May 1931, 95 years ago.
Who runs T.Couzens & Sons Limited?
T.Couzens & Sons Limited has 2 active directors, the longest-serving appointed in Jun 2007. Their names and service addresses are on the Companies House register.
Who owns T.Couzens & Sons Limited?
2 people or companies have significant control of T.Couzens & Sons Limited: an individual (owns 75% or more of the shares); an individual (owns 75% or more of the shares).
What is the penalty if T.Couzens & Sons 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 T.Couzens & Sons 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.