- Companies
- Installers
- Cwmbran
- Doctor Windows Limited
Doctor Windows Limited
- Company number
- 09918427
- Incorporated
- 16 Dec 201510 years trading
- Registered office
- Unit 33 John Baker Close, Llantarnam Industrial Estate, Cwmbran, Torfaen, NP44 3AX
- Nature of business
- Other construction installation; Joinery installation
Doctor Windows Limited is a 10-year-old private limited company registered in Cwmbran, company number 09918427, one of 15 installation companies (insulation, lifts, shutters and similar) in Cwmbran. Companies House shows its accounts as overdue: they were due on 30 September 2026.
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 £38K (-77.1%) on the year before, to -£87K.
- Net assets rose in 4 of 8 year-on-year comparisons on record.
- Current assets of £22K against £131K owed within a year: 0.2 times cover.
- 11 employees on average, down from 14 the year before.
- Balance sheets on record for 9 years, 2016 to 2024.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Dec 2024 | -£87K | £22K | £131K | 11 | |
| 31 Dec 2023 | -£49K | £28K | £100K | 14 | |
| 31 Dec 2022 | -£29K | £24K | £75K | 12 | |
| 31 Dec 2021 | -£20K | £29K | £66K | 13 | |
| 31 Dec 2020 | -£52K | £34K | £55K | 10 | |
| 31 Dec 2019 | -£76K | £2,852 | £82K | 7 | |
| 31 Dec 2018 | £32K | -£4,686 | £44K | 7 | |
| 31 Dec 2017 | £4,882 | -£4,311 | £18K | 6 | |
| 31 Dec 2016 | £543 | £3,664 | £3,121 |
Who runs and owns Doctor Windows Limited
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officers (2)
| Name | Role | Appointed |
|---|---|---|
| D*** C*** | Director | Jul 2018 |
| N*** T*** | Secretary | Dec 2015 |
3 former officers
| Name | Role | Appointed | Left |
|---|---|---|---|
| D*** C*** | Director | Dec 2015 | Jan 2016 |
| K*** C*** | Director | Dec 2015 | Jan 2016 |
| J*** R*** | Director | Jan 2016 | Jul 2018 |
People with significant control (2)
Where Doctor Windows Limited is registered
The registered office is in Cwmbran (NP44), in the Torfaen local authority area, Wales. Show NP44 3AX on a map.
Other trade companies in NP44
- Compliant Fire Safety Solutions LtdInstallers
- V&K Solutions LimitedCivil engineering
- Pure Clean by Nichola LtdCleaning companies
- Amsof LimitedPlumbers and heating engineers
- Marchant Home Solutions Ltd LtdBuilders
- True Level Concrete LtdBuilders
- A2Z Tech LimitedMachinery repair and installation
- Days Ventilation Solutions LtdPlumbers and heating engineers
What happens if Doctor Windows Limited files late
If the accounts reach Companies House today, the late filing penalty is £150 (£300 if last year's accounts were also late). It rises at each step below.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Oct 2026 to 31 Oct 2026 | £150 |
| 1 to 3 months late | 1 Nov 2026 to 31 Dec 2026 | £375 |
| 3 to 6 months late | 1 Jan 2027 to 31 Mar 2027 | £750 |
| More than 6 months late | From 1 Apr 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jan 2027 | £200 |
| 3 months late | 31 Mar 2027 | another £200 |
| 6 months late | 30 Jun 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Dec 2027 | 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
- 09918427
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 16 December 2015 (10 years ago)
- Registered office
- Unit 33 John Baker Close, Llantarnam Industrial Estate, Cwmbran, Torfaen, NP44 3AX
- Nature of business
- Other construction installation (SIC 43290)
Joinery installation (SIC 43320) - Year end
- 31 December (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 December 2024
- Last confirmation statement
- 15 December 2025
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 Cwmbran
Other active installation companies (insulation, lifts, shutters and similar) registered in Cwmbran.
- Hillier Construction Services Limited2021
- Ig Construction Services Limited2020
- Job Done Renovations Ltd2026
- Pure Sealants Ltd2026
- South Wales Screeding Services Ltd2013
- Steven Magor and Son Paving Services Limited2023
- T.C Building & Maintenance Ltd2022
- TRG Groundworks Civil Engineering Ltd2022
All installation companies (insulation, lifts, shutters and similar) in Cwmbran · All trades in Cwmbran · Installers across the UK
Frequently asked questions
When are Doctor Windows Limited's accounts due?
Doctor Windows Limited's accounts were due at Companies House on 30 September 2026 and the register shows them as overdue.
When is Doctor Windows Limited's CT600 due?
The CT600 for the period to 31 December 2025 is due at HMRC by 31 December 2026, 12 months after the period end. The corporation tax itself is payable earlier, by 1 October 2026.
Is Doctor Windows Limited still trading?
Doctor Windows Limited is listed as active on the Companies House register (checked 13 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 Doctor Windows Limited do?
Doctor Windows Limited is registered under Other construction installation (SIC 43290); Joinery installation (SIC 43320).
How old is Doctor Windows Limited?
Doctor Windows Limited was incorporated on 16 December 2015, 10 years ago.
Who runs Doctor Windows Limited?
Doctor Windows Limited has 1 active director, the longest-serving appointed in Jul 2018. Their names and service addresses are on the Companies House register.
Who owns Doctor Windows Limited?
2 people or companies have significant control of Doctor Windows Limited: an individual (owns 25% to 50% of the shares); an individual (owns 50% to 75% of the shares).
What is the penalty if Doctor Windows 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 Doctor Windows Limited on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 13 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.