- Company number
- 05148811
- Incorporated
- 9 Jun 200422 years trading
- Registered office
- Alex House 260-268, Chapel Street, Salford, M3 5JZ
- Nature of business
- Glazing
SG Window Systems Limited is a 22-year-old private limited company registered in Salford, company number 05148811, one of the UK's glazing companies. 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 down £83K (-3.5%) on the year before, to £2.3M.
- Net assets rose in 5 of 9 year-on-year comparisons on record.
- Current assets of £4.1M against £2.4M owed within a year: 1.7 times cover.
- 84 employees on average, up from 9 the year before.
- 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 |
|---|---|---|---|---|---|
| 30 Jun 2026 | £2.3M | £21K | £4.1M | £2.4M | 84 |
| 30 Jun 2025 | £2.4M | £651K | £4.6M | £2.9M | 9 |
| 30 Jun 2024 | £2.1M | £452K | £4.2M | £2.7M | 90 |
| 30 Jun 2023 | £512K | £463K | £2.6M | £2.8M | 90 |
| 30 Jun 2022 | £208K | £491K | £1.7M | £1.9M | 63 |
| 30 Jun 2021 | £259K | £472K | £1.2M | £1.5M | 70 |
| 30 Jun 2020 | £322K | £171K | £853K | £1.1M | 73 |
| 30 Jun 2019 | £143K | £233K | £1.1M | £1.5M | 70 |
| 30 Jun 2018 | £19K | £188K | £1M | £1.4M | |
| 30 Jun 2017 | £223K | £220K | £1.1M | £1.3M |
Where SG Window Systems Limited is registered
The registered office is in Salford (M3), in the Salford local authority area, North West. Show M3 5JZ on a map.
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Also registered at this address
23 other companies use the same registered office as SG Window Systems Limited.
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What happens if SG Window Systems 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
- 05148811
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 9 June 2004 (22 years ago)
- Registered office
- Alex House 260-268, Chapel Street, Salford, M3 5JZ
- Nature of business
- Glazing (SIC 43342)
- Year end
- 30 June (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 June 2025
- Last confirmation statement
- 9 June 2026
- Previous names
- Welch Services Limited (until 17 Feb 2010)
Filing notes for glazing companies
Glazing companies often take deposits before work starts. Deposits held at the year end are a liability, not income, until the job is done.
Similar companies in Salford
Other active glazing companies registered in Salford.
All glazing companies in Salford · All trades in Salford · Glaziers across the UK
Frequently asked questions
When are SG Window Systems Limited's accounts due?
SG Window Systems Limited's next accounts are due at Companies House by 31 March 2027 (in 170 days), covering the period to 30 June 2026.
When is SG Window Systems 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 SG Window Systems Limited still trading?
SG Window Systems 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 SG Window Systems Limited do?
SG Window Systems Limited is registered under Glazing (SIC 43342).
How old is SG Window Systems Limited?
SG Window Systems Limited was incorporated on 9 June 2004, 22 years ago.
What is the penalty if SG Window Systems 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 SG Window Systems 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.