- Companies
- Installers
- Boston
- Southfield Windows & Doors Limited
Southfield Windows & Doors Limited
- Company number
- 11431927
- Incorporated
- 25 Jun 20188 years trading
- Registered office
- Southfield, Heron Way, Boston, Lincolnshire, PE21 7SH
- Nature of business
- Other construction installation; Glazing
Southfield Windows & Doors Limited is a 8-year-old private limited company registered in Boston, company number 11431927, one of 16 installation companies (insulation, lifts, shutters and similar) in Boston. Its next accounts are due at Companies House on 31 March 2027, and the CT600 for the period to 30 June 2026 is due at HMRC on 30 June 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 £22K (+133%) on the year before, to £38K.
- Net assets rose in 5 of 6 year-on-year comparisons on record.
- Current assets of £88K against £54K owed within a year: 1.6 times cover.
- 2 employees on average during the year.
- 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 |
|---|---|---|---|---|---|
| 30 Jun 2025 | £38K | £88K | £54K | 2 | |
| 30 Jun 2024 | £16K | £104K | £80K | 2 | |
| 30 Jun 2023 | £11K | £106K | £58K | 2 | |
| 30 Jun 2022 | £32K | £100K | £43K | 2 | |
| 30 Jun 2021 | £4,504 | £0 | £77K | £36K | 1 |
| 30 Jun 2020 | £2,228 | £39K | £53K | £3,369 | 1 |
| 30 Jun 2019 | £2,166 | £2,527 | £6,373 | £4,207 | 1 |
Where Southfield Windows & Doors Limited is registered
The registered office is in Boston (PE21), in the Boston local authority area, East Midlands. Show PE21 7SH on a map.
Other trade companies in PE21
- Ciu Roofing LimitedRoofers
- Composite Aircraft Engineering LtdMachinery repair and installation
- Marshlands LtdPlumbers and heating engineers
- Bull Property Solutions LtdSpecialist contractors
- Victoria and Victor LtdBuilders
- One Call Services (Boston) LtdJoiners and carpenters
- Project Levo LtdProperty developers
- VJ Select LimitedMotor traders
Also registered at this address
1 other company uses the same registered office as Southfield Windows & Doors Limited.
- Sam Pesterfield Builders LimitedCivil engineering
What happens if Southfield Windows & Doors 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 March 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Apr 2027 to 30 Apr 2027 | £150 |
| 1 to 3 months late | 1 May 2027 to 30 Jun 2027 | £375 |
| 3 to 6 months late | 1 Jul 2027 to 30 Sep 2027 | £750 |
| More than 6 months late | From 1 Oct 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jul 2027 | £200 |
| 3 months late | 30 Sep 2027 | another £200 |
| 6 months late | 30 Dec 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Jun 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
- 11431927
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 25 June 2018 (8 years ago)
- Registered office
- Southfield, Heron Way, Boston, Lincolnshire, PE21 7SH
- Nature of business
- Other construction installation (SIC 43290)
Glazing (SIC 43342) - Year end
- 30 June (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 June 2025
- Last confirmation statement
- 7 June 2026
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 Boston
Other active installation companies (insulation, lifts, shutters and similar) registered in Boston.
- Steve Hodgson Services Limited2016
- UK Mge Limited2021
- Apex Plastics Ltd2025
- Ecoflow Ltd2018
- Harrison Groundworks & Civils Ltd2019
- JK Burch Construction Ltd2013
- Kay Kitchens Limited2015
- Kingfisher Energy Limited2013
All installation companies (insulation, lifts, shutters and similar) in Boston · All trades in Boston · Installers across the UK
Frequently asked questions
When are Southfield Windows & Doors Limited's accounts due?
Southfield Windows & Doors Limited's next accounts are due at Companies House by 31 March 2027 (in 168 days), covering the period to 30 June 2026.
When is Southfield Windows & Doors Limited's CT600 due?
The CT600 for the period to 30 June 2026 is due at HMRC by 30 June 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 April 2027.
Is Southfield Windows & Doors Limited still trading?
Southfield Windows & Doors 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 Southfield Windows & Doors Limited do?
Southfield Windows & Doors Limited is registered under Other construction installation (SIC 43290); Glazing (SIC 43342).
How old is Southfield Windows & Doors Limited?
Southfield Windows & Doors Limited was incorporated on 25 June 2018, 8 years ago.
What is the penalty if Southfield Windows & Doors 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 Southfield Windows & Doors 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.