- Company number
- 09452125
- Incorporated
- 21 Feb 201511 years trading
- Registered office
- 14 Rowan Drive, Royal Wootton Bassett, Swindon, Wiltshire, SN4 7ES
- Nature of business
- Glazing
Sandymount Windows and Doors Ltd is a 11-year-old private limited company registered in Swindon, company number 09452125, one of 19 glazing companies in Swindon. Its next accounts are due at Companies House on 31 July 2027, and the CT600 for the period to 31 October 2026 is due at HMRC on 31 October 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 £25K (+105.8%) on the year before, to £49K.
- Net assets rose in 5 of 9 year-on-year comparisons on record.
- Current assets of £239K against £147K owed within a year: 1.6 times cover.
- 5 employees on average, up from 4 the year before.
- 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 Oct 2025 | £49K | £3,758 | £239K | £147K | 5 |
| 31 Oct 2024 | £24K | £27K | £106K | £42K | 4 |
| 31 Oct 2023 | -£49K | £8,999 | £41K | £32K | 2 |
| 31 Oct 2022 | -£12K | £21K | £33K | £46K | 0 |
| 31 Oct 2021 | -£15K | £8,107 | £21K | £37K | 1 |
| 31 Jul 2020 | £1,862 | £22K | £51K | £14K | 0 |
| 30 Apr 2019 | -£2,014 | £8,222 | £8,862 | £11K | 1 |
| 30 Apr 2018 | -£14K | £2,954 | £17K | 1 | |
| 30 Apr 2017 | -£12K | £1,409 | £14K | 1 | |
| 30 Apr 2016 | -£5,146 | £934 | £934 |
Where Sandymount Windows and Doors Ltd is registered
The registered office is in Swindon (SN4), in the Wiltshire local authority area, South West. Show SN4 7ES on a map.
Other trade companies in SN4
- DT Motor Cetre LtdMotor traders
- JT Construction and Maintenance LimitedFinishing trades
- Newbury Gateway Land LtdProperty developers
- DRM Energy LtdBuilders
- Natalie Jean Housekeeping Services LtdCleaning companies
- Thread - Tech & Sole LimitedBuilders
- Mallins Properties LtdProperty developers
- Lee Shields Mbe Heating and Air Conditioning LtdPlumbers and heating engineers
Also registered at this address
1 other company uses the same registered office as Sandymount Windows and Doors Ltd.
- Sandymount Construction LtdFinishing trades
What happens if Sandymount Windows and Doors 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 July 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Aug 2027 to 31 Aug 2027 | £150 |
| 1 to 3 months late | 1 Sep 2027 to 31 Oct 2027 | £375 |
| 3 to 6 months late | 1 Nov 2027 to 31 Jan 2028 | £750 |
| More than 6 months late | From 1 Feb 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Nov 2027 | £200 |
| 3 months late | 31 Jan 2028 | another £200 |
| 6 months late | 30 Apr 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Oct 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
- 09452125
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 21 February 2015 (11 years ago)
- Registered office
- 14 Rowan Drive, Royal Wootton Bassett, Swindon, Wiltshire, SN4 7ES
- Nature of business
- Glazing (SIC 43342)
- Year end
- 31 October (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 October 2025
- Last confirmation statement
- 16 October 2025
- Previous names
- Instadoor Limited (until 10 Sep 2024)
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 Swindon
Other active glazing companies registered in Swindon.
- Shades Window Films Ltd2007
- Surefit Windows Limited2003
- Urban Gray Ltd2026
- Windowology Limited1996
- Windows by Design Limited2004
- Abbey Glass & Windows Limited2024
- Chelworth Windows & Conservatories Limited2008
- Colonnade Conservatories Limited2000
All glazing companies in Swindon · All trades in Swindon · Glaziers across the UK
Frequently asked questions
When are Sandymount Windows and Doors Ltd's accounts due?
Sandymount Windows and Doors Ltd's next accounts are due at Companies House by 31 July 2027 (in 290 days), covering the period to 31 October 2026.
When is Sandymount Windows and Doors Ltd's CT600 due?
The CT600 for the period to 31 October 2026 is due at HMRC by 31 October 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 August 2027.
Is Sandymount Windows and Doors Ltd still trading?
Sandymount Windows and Doors 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 Sandymount Windows and Doors Ltd do?
Sandymount Windows and Doors Ltd is registered under Glazing (SIC 43342).
How old is Sandymount Windows and Doors Ltd?
Sandymount Windows and Doors Ltd was incorporated on 21 February 2015, 11 years ago.
What is the penalty if Sandymount Windows and Doors 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 Sandymount Windows and Doors 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.