- Companies
- Installers
- Portsmouth
- D and L Southern Ltd
D and L Southern Ltd
- Company number
- 11365102
- Incorporated
- 16 May 20188 years trading
- Registered office
- Warren House, Gunstore Road, Portsmouth, Hampshire, PO3 5HL
- Nature of business
- Other construction installation; Buying and selling of own real estate; Other letting and operating of own or leased real estate
D and L Southern Ltd is a 8-year-old private limited company registered in Portsmouth, company number 11365102, one of 84 installation companies (insulation, lifts, shutters and similar) 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 up £63K on the year before, to £63K.
- Net assets rose in 1 of 6 year-on-year comparisons on record.
- Current assets of £3.7M against £3.7M owed within a year: 1.0 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 7 years, 2019 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | £63K | £12K | £3.7M | £3.7M | 0 |
| 31 Mar 2024 | £100 | £6,385 | £3.9M | £3.9M | 2 |
| 31 Mar 2023 | £100 | £41 | £3.6M | £3.6M | 2 |
| 31 Mar 2022 | £100 | £40 | £1.5M | £1.5M | 2 |
| 31 Mar 2021 | £100 | £3 | £84K | £84K | 2 |
| 31 Mar 2020 | £100 | £166 | £54K | £54K | 2 |
| 31 Mar 2019 | £100 |
Where D and L Southern Ltd is registered
The registered office is in Portsmouth (PO3), in the Portsmouth local authority area, South East. Show PO3 5HL on a map.
Other trade companies in PO3
- GJM Construction LtdBuilders
- Al Fajar Building LimitedFinishing trades
- New Milton Decor LtdPainters and decorators
- Portsmouth Autos LtdMechanics and garages
- Henley Roofing Group LimitedInstallers
- I’M Covered 365 Ac LtdPlumbers and heating engineers
- Scope Bodyshop LtdMechanics and garages
- GP Technical LtdSpecialist contractors
Also registered at this address
4 other companies use the same registered office as D and L Southern Ltd.
- Vale Southern Construction LimitedBuilders
- Vale Southern LimitedBuilders
- W2 Electrical LimitedElectricians
- Westvale Property Developments LimitedProperty developers
What happens if D and L Southern 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 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
- 11365102
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 16 May 2018 (8 years ago)
- Registered office
- Warren House, Gunstore Road, Portsmouth, Hampshire, PO3 5HL
- Nature of business
- Other construction installation (SIC 43290)
Buying and selling of own real estate (SIC 68100)
Other letting and operating of own or leased real estate (SIC 68209) - Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 30 November 2025
- Charges (mortgages)
- 2 outstanding of 4 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 Portsmouth
Other active installation companies (insulation, lifts, shutters and similar) registered in Portsmouth.
- D Eyre Brickwork Ltd2016
- D&H Brickwork Ltd2023
- D2I Property Maintenance Limited2009
- Da Construction Southern Limited2019
- Danilcom Construction Ltd2025
- Days Window & Door Services Limited2001
- Doors and Glass Limited2008
- Dreamrooms (Southern) Limited2023
All installation companies (insulation, lifts, shutters and similar) in Portsmouth · All trades in Portsmouth · Installers across the UK
Frequently asked questions
When are D and L Southern Ltd's accounts due?
D and L Southern Ltd's next accounts are due at Companies House by 31 December 2026 (in 78 days), covering the period to 31 March 2026.
When is D and L Southern Ltd'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 D and L Southern Ltd still trading?
D and L Southern 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 D and L Southern Ltd do?
D and L Southern Ltd is registered under Other construction installation (SIC 43290); Buying and selling of own real estate (SIC 68100); Other letting and operating of own or leased real estate (SIC 68209).
How old is D and L Southern Ltd?
D and L Southern Ltd was incorporated on 16 May 2018, 8 years ago.
What is the penalty if D and L Southern 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 D and L Southern 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.