- Companies
- Finishing trades
- Dorchester
- Windowman Dorchester Limited
Windowman Dorchester Limited
- Company number
- 12930720
- Incorporated
- 5 Oct 20206 years trading
- Registered office
- Prospect House 41 Peverell Avenue East, Poundbury, Dorchester, DT1 3WE
- Nature of business
- Other building completion and finishing
Windowman Dorchester Limited is a 6-year-old private limited company registered in Dorchester, company number 12930720, one of 33 building finishing companies in Dorchester. Its next accounts are due at Companies House on 31 October 2026, and its first CT600 is due at HMRC on 31 October 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 up £1,592 (+81.5%) on the year before, to £3,545.
- Net assets rose in 3 of 3 year-on-year comparisons on record.
- Current assets of £138K against £134K owed within a year: 1.0 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 4 years, 2021 to 2024.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Oct 2024 | £3,545 | £5,811 | £138K | £134K | 2 |
| 31 Oct 2023 | £1,953 | £27K | £109K | £107K | 2 |
| 31 Oct 2022 | £1,453 | £11K | £70K | £68K | 2 |
| 31 Oct 2021 | £689 | £7,421 | £76K | £75K | 1 |
Where Windowman Dorchester Limited is registered
The registered office is in Dorchester (DT1), in the Dorset local authority area, South West. Show DT1 3WE on a map.
Other trade companies in DT1
- Wareham MOT LimitedMechanics and garages
- Coastal Crest Dorset Cleaning Company LimitedCleaning companies
- Hybrid Superstructures LtdBuilders
- Solo Construction & Development LimitedBuilders
- Guardian Home Improvements LimitedFinishing trades
- Dorset Cars LtdMotor traders
- Rebecca Scaffolding LtdScaffolders
- Fox Roofing & Leadworks LtdRoofers
Also registered at this address
2 other companies use the same registered office as Windowman Dorchester Limited.
- Guardian Home Improvements LimitedFinishing trades
- Guardian Roofs Dorset LtdRoofers
What happens if Windowman Dorchester 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 31 October 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Nov 2026 to 30 Nov 2026 | £150 |
| 1 to 3 months late | 1 Dec 2026 to 31 Jan 2027 | £375 |
| 3 to 6 months late | 1 Feb 2027 to 30 Apr 2027 | £750 |
| More than 6 months late | From 1 May 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Feb 2027 | £200 |
| 3 months late | 30 Apr 2027 | another £200 |
| 6 months late | 31 Jul 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jan 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
- 12930720
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 5 October 2020 (6 years ago)
- Registered office
- Prospect House 41 Peverell Avenue East, Poundbury, Dorchester, DT1 3WE
- Nature of business
- Other building completion and finishing (SIC 43390)
- Year end
- 31 October (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 October 2024
- Last confirmation statement
- 4 October 2025
Filing notes for building finishing companies
Finishing trade companies cover a wide range of work. Most are micro-entities with simple accounts and a straightforward CT600.
Similar companies in Dorchester
Other active building finishing companies registered in Dorchester.
- A&J Building Partners Ltd2023
- Blue C Ltd2023
- Buildbeam Building Services Limited2026
- Burch (SW) Limited2023
- Gladwish Construction and Groundworks Limited2003
- Guardian Home Improvements Limited2026
- Handyperson Services Limited2026
- Harbour Innovations Limited2007
All building finishing companies in Dorchester · All trades in Dorchester · Finishing trades across the UK
Frequently asked questions
When are Windowman Dorchester Limited's accounts due?
Windowman Dorchester Limited's next accounts are due at Companies House by 31 October 2026 (in 18 days), covering the period to 31 January 2026.
When is Windowman Dorchester Limited's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 31 October 2025, due by 31 October 2026, and one for the period to 31 January 2026, due by 31 January 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Windowman Dorchester Limited still trading?
Windowman Dorchester 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 Windowman Dorchester Limited do?
Windowman Dorchester Limited is registered under Other building completion and finishing (SIC 43390).
How old is Windowman Dorchester Limited?
Windowman Dorchester Limited was incorporated on 5 October 2020, 6 years ago.
What is the penalty if Windowman Dorchester 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 Windowman Dorchester 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.