- Companies
- Finishing trades
- Cambridge
- Carl Dunn Building & Roofing Trading As Cambridge Roof Lights Ltd
Carl Dunn Building & Roofing Trading As Cambridge Roof Lights Ltd
- Company number
- 10477223
- Incorporated
- 14 Nov 20169 years trading
- Registered office
- 25 Worcester Avenue, Hardwick, Cambridge, CB23 7XG
- Nature of business
- Other building completion and finishing
Carl Dunn Building & Roofing Trading As Cambridge Roof Lights Ltd is a 9-year-old private limited company registered in Cambridge, company number 10477223, one of 94 building finishing companies in Cambridge. Its next accounts are due at Companies House on 31 August 2027, and the CT600 for the period to 30 November 2026 is due at HMRC on 30 November 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 down £15 (-0.1%) on the year before, to £16K.
- Net assets rose in 5 of 8 year-on-year comparisons on record.
- Current assets of £28K against £55K owed within a year: 0.5 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 9 years, 2017 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Nov 2025 | £16K | £28K | £55K | 1 | |
| 30 Nov 2024 | £16K | £810 | £28K | 1 | |
| 30 Nov 2023 | £27K | £1,493 | £31K | 1 | |
| 30 Nov 2022 | £12K | £5,341 | £21K | 1 | |
| 30 Nov 2021 | £12K | £16K | £32K | 1 | |
| 30 Nov 2020 | £7,958 | £44K | £36K | 1 | |
| 30 Nov 2019 | £7,241 | £29K | £22K | 1 | |
| 30 Nov 2018 | £223 | £32K | £32K | ||
| 30 Nov 2017 | £674 | £4,715 | £34K | £34K | 1 |
Where Carl Dunn Building & Roofing Trading As Cambridge Roof Lights Ltd is registered
The registered office is in Cambridge (CB23), in the South Cambridgeshire local authority area, East of England. Show CB23 7XG on a map.
Other trade companies in CB23
- Hayberry Developments LtdProperty developers
- L & A's Care LimitedCleaning companies
- Colton Brickwork LimitedInstallers
- Xpray Group LtdCleaning companies
- Precision Vehicle Solutions LtdMechanics and garages
- Kayb Paint Work LtdPainters and decorators
- Planted Spaces LtdLandscapers and gardeners
- Georgi Garage LtdMechanics and garages
What happens if Carl Dunn Building & Roofing Trading As Cambridge Roof Lights 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 August 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Sep 2027 to 30 Sep 2027 | £150 |
| 1 to 3 months late | 1 Oct 2027 to 30 Nov 2027 | £375 |
| 3 to 6 months late | 1 Dec 2027 to 29 Feb 2028 | £750 |
| More than 6 months late | From 1 Mar 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Dec 2027 | £200 |
| 3 months late | 29 Feb 2028 | another £200 |
| 6 months late | 30 May 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Nov 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
- 10477223
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 14 November 2016 (9 years ago)
- Registered office
- 25 Worcester Avenue, Hardwick, Cambridge, CB23 7XG
- Nature of business
- Other building completion and finishing (SIC 43390)
- Year end
- 30 November (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 November 2025
- Last confirmation statement
- 13 November 2025
- Previous names
- Carl Dunn Building & Roofing Ltd (until 23 Sep 2026)
Carl Dunn Ltd (until 19 Mar 2022)
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 Cambridge
Other active building finishing companies registered in Cambridge.
- CB1 Central Build Ltd2021
- Central Integrated Services Limited2026
- Cherry Tree Renovation Cambridge Ltd2024
- Chris Wright Fencing Limited2019
- Colin O'Dell Limited2010
- Compass Developments (Cambridge) Limited2018
- Create Space Ltd2005
- Cultivate Gardens Limited2017
All building finishing companies in Cambridge · All trades in Cambridge · Finishing trades across the UK
Frequently asked questions
When are Carl Dunn Building & Roofing Trading As Cambridge Roof Lights Ltd's accounts due?
Carl Dunn Building & Roofing Trading As Cambridge Roof Lights Ltd's next accounts are due at Companies House by 31 August 2027 (in 322 days), covering the period to 30 November 2026.
When is Carl Dunn Building & Roofing Trading As Cambridge Roof Lights Ltd's CT600 due?
The CT600 for the period to 30 November 2026 is due at HMRC by 30 November 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 September 2027.
Is Carl Dunn Building & Roofing Trading As Cambridge Roof Lights Ltd still trading?
Carl Dunn Building & Roofing Trading As Cambridge Roof Lights 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 Carl Dunn Building & Roofing Trading As Cambridge Roof Lights Ltd do?
Carl Dunn Building & Roofing Trading As Cambridge Roof Lights Ltd is registered under Other building completion and finishing (SIC 43390).
How old is Carl Dunn Building & Roofing Trading As Cambridge Roof Lights Ltd?
Carl Dunn Building & Roofing Trading As Cambridge Roof Lights Ltd was incorporated on 14 November 2016, 9 years ago.
What is the penalty if Carl Dunn Building & Roofing Trading As Cambridge Roof Lights 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 Carl Dunn Building & Roofing Trading As Cambridge Roof Lights 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.