- Company number
- 08611686
- Incorporated
- 16 Jul 201313 years trading
- Registered office
- Severn House, Hazell Drive, Newport, NP10 8FY
- Nature of business
- Glazing
Mercury Windows and Doors Limited is a 13-year-old private limited company registered in Newport, company number 08611686, one of 19 glazing companies in Newport. Its next accounts are due at Companies House on 30 April 2027, and the CT600 for the period to 31 July 2026 is due at HMRC on 31 July 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 £20K (+66.9%) on the year before, to -£9,656.
- Net assets rose in 4 of 9 year-on-year comparisons on record.
- Current assets of £24K against £25K owed within a year: 0.9 times cover.
- 3 employees on average during the year.
- 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 Jul 2025 | -£9,656 | £9,698 | £24K | £25K | 3 |
| 31 Jul 2024 | -£29K | £4,269 | £19K | £29K | 3 |
| 31 Jul 2023 | -£30K | £9,030 | £30K | £40K | 4 |
| 31 Jul 2022 | -£1,670 | £15K | £42K | £24K | 3 |
| 31 Jul 2021 | £14K | £17K | £49K | £22K | 3 |
| 31 Jul 2020 | £23K | £37K | £86K | £28K | 2 |
| 31 Jul 2019 | £234 | £4,712 | £23K | £26K | 2 |
| 31 Jul 2018 | £4,139 | £6,697 | £22K | £24K | 2 |
| 31 Jul 2017 | £3,529 | £1,867 | £15K | £18K | 2 |
| 31 Jul 2016 | £5,964 | £5,421 | £16K | £19K |
Where Mercury Windows and Doors Limited is registered
The registered office is in Newport (NP10), in the Newport local authority area, Wales. Show NP10 8FY on a map.
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- Williams Engineering Enterprises LtdMechanics and garages
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Also registered at this address
22 other companies use the same registered office as Mercury Windows and Doors Limited.
- Best Blinds (Wales & South West) LtdSpecialist contractors
- C & K Sparkles Cleaning LimitedCleaning companies
- Cityresin LtdInstallers
- Elite Climate Group LimitedPlumbers and heating engineers
- Foresthaus LtdInstallers
- Front Row Van Hire LtdMechanics and garages
- Hardscaping Solutions LtdFloor and wall tilers
- Hendre Vehicles LimitedMotor traders
- JC Ac Mechanical Services LimitedMachinery repair and installation
- Oakdale Commercial LimitedProperty developers
- Panda Industries LtdRoofers
- Pontypool Respray Centre LimitedMechanics and garages
- Rail Support LimitedMachinery repair and installation
- Sheds South Wales LimitedJoiners and carpenters
- SJ Workforce LimitedSpecialist contractors
- Smoke and Fire Ventilation Systems LimitedMachinery repair and installation
- Strand Energy & Engineering LtdInstallers
- Stripes Lawn Care LimitedLandscapers and gardeners
- TC Car Sales LimitedMotor traders
- TC Competitions LimitedMotor traders
- Thermal-Tek Solutions LimitedInstallers
- World State UK LimitedMotor traders
What happens if Mercury Windows and 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 30 April 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 May 2027 to 31 May 2027 | £150 |
| 1 to 3 months late | 1 Jun 2027 to 31 Jul 2027 | £375 |
| 3 to 6 months late | 1 Aug 2027 to 31 Oct 2027 | £750 |
| More than 6 months late | From 1 Nov 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Aug 2027 | £200 |
| 3 months late | 31 Oct 2027 | another £200 |
| 6 months late | 31 Jan 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jul 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
- 08611686
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 16 July 2013 (13 years ago)
- Registered office
- Severn House, Hazell Drive, Newport, NP10 8FY
- Nature of business
- Glazing (SIC 43342)
- Year end
- 31 July (accounting reference date)
- Accounts type
- Unaudited abridged
- Last accounts made up to
- 31 July 2025
- Last confirmation statement
- 16 July 2026
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 Newport
Other active glazing companies registered in Newport.
- P.J.C. Glazing (Iow) Limited2021
- Polar Bear Windows Limited2009
- Precious UPVC Installations Ltd2022
- Sas Window Films Ltd2013
- Secure Windows and Doors Ltd2026
- Smarter Glazing Solutions Ltd2024
- Stylish Plastics Limited2004
- The Glass & Window Shop Ltd2008
All glazing companies in Newport · All trades in Newport · Glaziers across the UK
Frequently asked questions
When are Mercury Windows and Doors Limited's accounts due?
Mercury Windows and Doors Limited's next accounts are due at Companies House by 30 April 2027 (in 199 days), covering the period to 31 July 2026.
When is Mercury Windows and Doors Limited's CT600 due?
The CT600 for the period to 31 July 2026 is due at HMRC by 31 July 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 May 2027.
Is Mercury Windows and Doors Limited still trading?
Mercury Windows and 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 Mercury Windows and Doors Limited do?
Mercury Windows and Doors Limited is registered under Glazing (SIC 43342).
How old is Mercury Windows and Doors Limited?
Mercury Windows and Doors Limited was incorporated on 16 July 2013, 13 years ago.
What is the penalty if Mercury Windows and 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 Mercury Windows and 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.