- Company number
- 16259669
- Incorporated
- 18 Feb 20251 year trading
- Registered office
- Lynwood House Rowan Close, ST Peters Park, Brackley, NN13 6PB
- Nature of business
- Glazing
Professor Windows Limited is a 1-year-old private limited company registered in Brackley, company number 16259669, one of 5 glazing companies in Brackley. Its next accounts are due at Companies House on 18 November 2026, and its first CT600 is due at HMRC on 17 February 2027.
Key dates
This company has not filed accounts yet. First accounts are due 21 months after incorporation, and the first period can run longer than a year.
Is this your company?
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Where Professor Windows Limited is registered
The registered office is in Brackley (NN13), in the West Northamptonshire local authority area, East Midlands. Show NN13 6PB on a map.
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What happens if Professor Windows 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 18 November 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 19 Nov 2026 to 18 Dec 2026 | £150 |
| 1 to 3 months late | 19 Dec 2026 to 18 Feb 2027 | £375 |
| 3 to 6 months late | 19 Feb 2027 to 18 May 2027 | £750 |
| More than 6 months late | From 19 May 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- 16259669
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 18 February 2025 (1 year ago)
- Registered office
- Lynwood House Rowan Close, ST Peters Park, Brackley, NN13 6PB
- Nature of business
- Glazing (SIC 43342)
- Year end
- 31 March (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 17 February 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 Brackley
Other active glazing companies registered in Brackley.
- DC Windows & Doors Roofline Ltd2025
- Distinguished Windows Ltd2013
- Folding Future Limited2004
- Insulate My Conservatory Ltd.2025
All glazing companies in Brackley · All trades in Brackley · Glaziers across the UK
Frequently asked questions
When are Professor Windows Limited's accounts due?
Professor Windows Limited's next accounts are due at Companies House by 18 November 2026 (in 37 days), covering the period to 31 March 2026.
When is Professor Windows 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 17 February 2026, due by 17 February 2027, and one for the period to 31 March 2026, due by 31 March 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Professor Windows Limited still trading?
Professor Windows 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 Professor Windows Limited do?
Professor Windows Limited is registered under Glazing (SIC 43342).
How old is Professor Windows Limited?
Professor Windows Limited was incorporated on 18 February 2025, 1 year ago.
What is the penalty if Professor 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 Professor Windows 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.