- Company number
- 15512595
- Incorporated
- 22 Feb 20242 years trading
- Registered office
- 33 Glyn Street, Porth, CF39 9LN
- Nature of business
- Roofing activities
Knowles Roofing Services Ltd is a 2-year-old private limited company registered in Porth, company number 15512595, one of 7 roofing companies in Porth. Its next accounts are due at Companies House on 30 November 2026, and the CT600 for the period to 28 February 2026 is due at HMRC on 28 February 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Financial snapshot, 2025
From the balance sheet at 28 February 2025, as filed at Companies House.
Where Knowles Roofing Services Ltd is registered
The registered office is in Porth (CF39), in the Rhondda Cynon Taf local authority area, Wales. Show CF39 9LN on a map.
Other trade companies in CF39
- Nvme Detailing LimitedMechanics and garages
- Choctar LimitedBuilders
- J Cantwell Surfacing & Contracting LtdCivil engineering
- Ok Rail LtdCivil engineering
- Porth Ceilings & Interiors LtdFinishing trades
- Wydex LtdBuilders
- Time Lec Services LtdElectricians
- Arb-Scape Tree Surgery & Landscaping LtdLandscapers and gardeners
What happens if Knowles Roofing Services 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 30 November 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Dec 2026 to 31 Dec 2026 | £150 |
| 1 to 3 months late | 1 Jan 2027 to 28 Feb 2027 | £375 |
| 3 to 6 months late | 1 Mar 2027 to 31 May 2027 | £750 |
| More than 6 months late | From 1 Jun 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Mar 2027 | £200 |
| 3 months late | 28 May 2027 | another £200 |
| 6 months late | 28 Aug 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 28 Feb 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
- 15512595
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 22 February 2024 (2 years ago)
- Registered office
- 33 Glyn Street, Porth, CF39 9LN
- Nature of business
- Roofing activities (SIC 43910)
- Year end
- 29 February (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 28 February 2025
- Last confirmation statement
- 21 February 2026
Filing notes for roofing companies
Roofing companies commonly work under CIS and run vans and access equipment, so CIS deductions and capital allowances are the two things to get right.
Similar companies in Porth
Other active roofing companies registered in Porth.
- MK UK Roofing Ltd2025
- Romans Roofing Ltd2026
- Tonyrefail Roofing Limited2019
- Davies Roofing Contractors Ltd2015
- Gillette Roofing Ltd2004
- Key Roofing Contractors Ltd2020
All roofing companies in Porth · All trades in Porth · Roofers across the UK
Frequently asked questions
When are Knowles Roofing Services Ltd's accounts due?
Knowles Roofing Services Ltd's next accounts are due at Companies House by 30 November 2026 (in 48 days), covering the period to 28 February 2026.
When is Knowles Roofing Services Ltd's CT600 due?
The CT600 for the period to 28 February 2026 is due at HMRC by 28 February 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 December 2026.
Is Knowles Roofing Services Ltd still trading?
Knowles Roofing Services 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 Knowles Roofing Services Ltd do?
Knowles Roofing Services Ltd is registered under Roofing activities (SIC 43910).
How old is Knowles Roofing Services Ltd?
Knowles Roofing Services Ltd was incorporated on 22 February 2024, 2 years ago.
What is the penalty if Knowles Roofing Services 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 Knowles Roofing Services 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.