- Company number
- 08793013
- Incorporated
- 27 Nov 201312 years trading
- Registered office
- 396 London Road, Earley, Reading, RG6 1BA
- Nature of business
- Glazing
Alpha Windows (Southern) Ltd is a 12-year-old private limited company registered in Reading, company number 08793013, one of 22 glazing companies in Reading. 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 down £103K (-100%) on the year before, to £0.
- Net assets rose in 4 of 9 year-on-year comparisons on record.
- Current assets of £10K against £10K owed within a year: 1.0 times cover.
- 1 employee on average, down from 6 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 |
|---|---|---|---|---|---|
| 31 Mar 2026 | £0 | £8,005 | £10K | £10K | 1 |
| 31 Mar 2025 | £103K | £302K | £223K | 6 | |
| 31 Mar 2024 | £112K | £244K | £161K | 7 | |
| 31 Mar 2023 | £150K | £320K | £169K | 7 | |
| 31 Mar 2022 | £128K | £343K | £184K | 7 | |
| 31 Mar 2021 | £37K | £369K | £274K | 7 | |
| 31 Mar 2020 | £5,501 | £125K | £133K | 8 | |
| 31 Mar 2019 | £67K | £133K | £115K | 7 | |
| 31 Mar 2018 | £77K | £156K | £151K | 7 | |
| 31 Mar 2017 | £41K | £150K | £204K |
Where Alpha Windows (Southern) Ltd is registered
The registered office is in Reading (RG6), in the Wokingham local authority area, South East. Show RG6 1BA on a map.
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- Vipooconstructions LimitedBuilders
- Abcdc LtdSpecialist contractors
What happens if Alpha Windows (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 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
- 08793013
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 27 November 2013 (12 years ago)
- Registered office
- 396 London Road, Earley, Reading, RG6 1BA
- Nature of business
- Glazing (SIC 43342)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2026
- Last confirmation statement
- 27 November 2025
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 Reading
Other active glazing companies registered in Reading.
- Berkshire Glazing Ltd2019
- City Double Glazing Limited2020
- D 4 Double Glazing Limited2016
- Earley Glass Limited2013
- Ecoglaze (Oxfordshire) Limited2020
- Emmer Green Installations Ltd2016
- Glasrite Ltd.1991
- Glass (Reading) Limited1988
All glazing companies in Reading · All trades in Reading · Glaziers across the UK
Frequently asked questions
When are Alpha Windows (Southern) Ltd's accounts due?
Alpha Windows (Southern) Ltd's next accounts are due at Companies House by 31 December 2027 (in 444 days), covering the period to 31 March 2027.
When is Alpha Windows (Southern) Ltd'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 Alpha Windows (Southern) Ltd still trading?
Alpha Windows (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 Alpha Windows (Southern) Ltd do?
Alpha Windows (Southern) Ltd is registered under Glazing (SIC 43342).
How old is Alpha Windows (Southern) Ltd?
Alpha Windows (Southern) Ltd was incorporated on 27 November 2013, 12 years ago.
What is the penalty if Alpha Windows (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 Alpha Windows (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.