- Company number
- 13275196
- Incorporated
- 18 Mar 20215 years trading
- Registered office
- 13 the Close, Norwich, Norfolk, NR1 4DS
- Nature of business
- Roofing activities
Cortex Roofing Limited is a 5-year-old private limited company registered in Norwich, company number 13275196, one of 68 roofing companies in Norwich. Its next accounts are due at Companies House on 31 December 2026, and the CT600 for the period to 31 March 2026 is due at HMRC on 31 March 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 £1,937 (-4.7%) on the year before, to £39K.
- Net assets rose in 1 of 3 year-on-year comparisons on record.
- Current assets of £60K against £21K owed within a year: 2.9 times cover.
- 1 employee on average, down from 2 the year before.
- Balance sheets on record for 4 years, 2022 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | £39K | £2,304 | £60K | £21K | 1 |
| 31 Mar 2024 | £41K | £4,369 | £79K | £38K | 2 |
| 31 Mar 2023 | £42K | £38K | £75K | £33K | 2 |
| 31 Mar 2022 | £1,384 | £9,367 | £31K | £30K | 2 |
Where Cortex Roofing Limited is registered
The registered office is in Norwich (NR1), in the Norwich local authority area, East of England. Show NR1 4DS on a map.
Other trade companies in NR1
- Simon Lawrence LtdFinishing trades
- Coastal Boutique Cleaning Company LtdCleaning companies
- Rise Roofing Anglia LimitedRoofers
- BT Landscaping & Maintenance LimitedLandscapers and gardeners
- Per Aera LtdSpecialist contractors
- Mci Mechanical and Electrical LimitedElectricians
- Fanf LtdElectricians
- Star Valeting & Tyres LtdMechanics and garages
Shared registered office
115 companies on our pages use this registered office address. An address shared this widely is usually an accountant's office or a company formation agent's service address, not where the business trades from.
What happens if Cortex Roofing 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 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 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
- 13275196
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 18 March 2021 (5 years ago)
- Registered office
- 13 the Close, Norwich, Norfolk, NR1 4DS
- Nature of business
- Roofing activities (SIC 43910)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 16 April 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 Norwich
Other active roofing companies registered in Norwich.
- D C Richmond Roofing Limited2006
- D M Thatching Ltd2011
- D. R. W. Construction Ltd2019
- Daly Roofing Services Ltd2026
- DC Roofing & Roofline Ltd2022
- DLK Roofing Norwich Ltd2020
- DNB Roofing Services Ltd2025
- Eastern Roofing and Solar Installation Limited2011
All roofing companies in Norwich · All trades in Norwich · Roofers across the UK
Frequently asked questions
When are Cortex Roofing Limited's accounts due?
Cortex Roofing Limited's next accounts are due at Companies House by 31 December 2026 (in 80 days), covering the period to 31 March 2026.
When is Cortex Roofing Limited's CT600 due?
The CT600 for the period to 31 March 2026 is due at HMRC by 31 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2027.
Is Cortex Roofing Limited still trading?
Cortex Roofing 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 Cortex Roofing Limited do?
Cortex Roofing Limited is registered under Roofing activities (SIC 43910).
How old is Cortex Roofing Limited?
Cortex Roofing Limited was incorporated on 18 March 2021, 5 years ago.
What is the penalty if Cortex Roofing 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 Cortex Roofing 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.