- Companies
- Installers
- Carlisle
- Window Doctor 2023 Limited
Window Doctor 2023 Limited
- Company number
- 15128794
- Incorporated
- 11 Sep 20233 years trading
- Registered office
- Fifteen Montgomery Way, Rosehill Industrial Estate, Carlisle, CA1 2RW
- Nature of business
- Other construction installation
Window Doctor 2023 Limited is a 3-year-old private limited company registered in Carlisle, company number 15128794, one of 37 installation companies (insulation, lifts, shutters and similar) in Carlisle. Its next accounts are due at Companies House on 30 September 2027, and the CT600 for the period to 31 December 2026 is due at HMRC on 31 December 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 £13K (+237.4%) on the year before, to £7,305.
- Current assets of £28K against £34K owed within a year: 0.8 times cover.
- 4 employees on average, up from 3 the year before.
- Balance sheets on record for 2 years, 2024 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Dec 2025 | £7,305 | £28K | £34K | 4 | |
| 31 Dec 2024 | -£5,316 | £47K | £11K | 3 |
Where Window Doctor 2023 Limited is registered
The registered office is in Carlisle (CA1), in the Cumberland local authority area, North West. Show CA1 2RW on a map.
Other trade companies in CA1
- Fine Finish Interiors LtdJoiners and carpenters
- GB Groundworks LtdCivil engineering
- Oak End Construction & Management LtdProperty developers
- GS10 Trading LimitedMotor traders
- Overbuilt UK LtdMotor traders
- Fire Door 360 LimitedJoiners and carpenters
- Carlisle Remapping LtdMechanics and garages
- Adam G Smith LimitedPlumbers and heating engineers
Also registered at this address
15 other companies use the same registered office as Window Doctor 2023 Limited.
- Armstrong Plant LimitedCivil engineering
- Beck & Tarn LtdProperty developers
- Cloudy Day Developments LtdProperty developers
- Keswick Property One LimitedProperty developers
- Laidlaw Building and Conservation LimitedProperty developers
- Laidlaw Scaffolding LimitedScaffolders
- Lrmedia LimitedMotor traders
- Signature Coatings Northern LimitedPainters and decorators
- Smartfit Windscreens LtdMechanics and garages
- Sustainable Groundworks Solutions LtdCivil engineering
- Svella Energy LimitedSpecialist contractors
- Tilemasters (Cumbria) LimitedFloor and wall tilers
- W.A. Developments International LimitedProperty developers
- WQ Contracting LimitedProperty developers
- WQ Electrical Services LimitedProperty developers
What happens if Window Doctor 2023 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 September 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Oct 2027 to 31 Oct 2027 | £150 |
| 1 to 3 months late | 1 Nov 2027 to 31 Dec 2027 | £375 |
| 3 to 6 months late | 1 Jan 2028 to 31 Mar 2028 | £750 |
| More than 6 months late | From 1 Apr 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jan 2028 | £200 |
| 3 months late | 31 Mar 2028 | another £200 |
| 6 months late | 30 Jun 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Dec 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
- 15128794
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 11 September 2023 (3 years ago)
- Registered office
- Fifteen Montgomery Way, Rosehill Industrial Estate, Carlisle, CA1 2RW
- Nature of business
- Other construction installation (SIC 43290)
- Year end
- 31 December (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 December 2025
- Last confirmation statement
- 10 September 2026
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 Carlisle
Other active installation companies (insulation, lifts, shutters and similar) registered in Carlisle.
- Woodpeckers K&B Ltd2022
- Andana Group Limited2025
- Barnham Bricklaying Limited2023
- Brand Nu @ Limited2019
- Briggs Construction Limited1998
- Briggs Homes Limited2004
- C R Kendall Groundworks Ltd2021
- CC Groundworks (Cumbria) Ltd2022
All installation companies (insulation, lifts, shutters and similar) in Carlisle · All trades in Carlisle · Installers across the UK
Frequently asked questions
When are Window Doctor 2023 Limited's accounts due?
Window Doctor 2023 Limited's next accounts are due at Companies House by 30 September 2027 (in 352 days), covering the period to 31 December 2026.
When is Window Doctor 2023 Limited's CT600 due?
The CT600 for the period to 31 December 2026 is due at HMRC by 31 December 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 October 2027.
Is Window Doctor 2023 Limited still trading?
Window Doctor 2023 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 Window Doctor 2023 Limited do?
Window Doctor 2023 Limited is registered under Other construction installation (SIC 43290).
How old is Window Doctor 2023 Limited?
Window Doctor 2023 Limited was incorporated on 11 September 2023, 3 years ago.
What is the penalty if Window Doctor 2023 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 Window Doctor 2023 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.