- Company number
- 13157585
- Incorporated
- 26 Jan 20215 years trading
- Registered office
- 52 Duffryn Crescent, Llanharan, Pontyclun, CF72 9RS
- Nature of business
- Glazing
Jon Thomas Windows Ltd is a 5-year-old private limited company registered in Pontyclun, company number 13157585, one of the UK's glazing companies. Its next accounts are due at Companies House on 31 October 2027, and the CT600 for the period to 31 January 2027 is due at HMRC on 31 January 2028.
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 £5,133 (-200.7%) on the year before, to -£7,690.
- Net assets rose in 0 of 4 year-on-year comparisons on record.
- Current assets of £3,621 against £14K owed within a year: 0.3 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 5 years, 2022 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Jan 2026 | -£7,690 | £3,621 | £14K | 1 | |
| 31 Jan 2025 | -£2,557 | £5,444 | £12K | 1 | |
| 31 Jan 2024 | -£2,000 | £2,994 | £11K | 1 | |
| 31 Jan 2023 | £263 | £4,521 | £12K | 1 | |
| 31 Jan 2022 | £4,704 | £11K | £14K | £5,685 | 0 |
Where Jon Thomas Windows Ltd is registered
The registered office is in Pontyclun (CF72), in the Rhondda Cynon Taf local authority area, Wales. Show CF72 9RS on a map.
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What happens if Jon Thomas Windows Ltd 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 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Nov 2027 to 30 Nov 2027 | £150 |
| 1 to 3 months late | 1 Dec 2027 to 31 Jan 2028 | £375 |
| 3 to 6 months late | 1 Feb 2028 to 30 Apr 2028 | £750 |
| More than 6 months late | From 1 May 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Feb 2028 | £200 |
| 3 months late | 30 Apr 2028 | another £200 |
| 6 months late | 31 Jul 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jan 2029 | 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
- 13157585
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 26 January 2021 (5 years ago)
- Registered office
- 52 Duffryn Crescent, Llanharan, Pontyclun, CF72 9RS
- Nature of business
- Glazing (SIC 43342)
- Year end
- 31 January (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 January 2026
- Last confirmation statement
- 25 January 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 Pontyclun
Other active glazing companies registered in Pontyclun.
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Frequently asked questions
When are Jon Thomas Windows Ltd's accounts due?
Jon Thomas Windows Ltd's next accounts are due at Companies House by 31 October 2027 (in 384 days), covering the period to 31 January 2027.
When is Jon Thomas Windows Ltd's CT600 due?
The CT600 for the period to 31 January 2027 is due at HMRC by 31 January 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 November 2027.
Is Jon Thomas Windows Ltd still trading?
Jon Thomas Windows Ltd 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 Jon Thomas Windows Ltd do?
Jon Thomas Windows Ltd is registered under Glazing (SIC 43342).
How old is Jon Thomas Windows Ltd?
Jon Thomas Windows Ltd was incorporated on 26 January 2021, 5 years ago.
What is the penalty if Jon Thomas Windows Ltd 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 Jon Thomas Windows Ltd 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.