- Companies
- Plumbers and heating engineers
- Romford
- Cortex Plumbing & Heating Engineering Ltd
Cortex Plumbing & Heating Engineering Ltd
- Company number
- 10505229
- Incorporated
- 30 Nov 20169 years trading
- Registered office
- 51 Ramsay Gardens, Romford, RM3 7NS
- Nature of business
- Plumbing, heat and air-conditioning installation
Cortex Plumbing & Heating Engineering Ltd is a 9-year-old private limited company registered in Romford, company number 10505229, one of 163 plumbing and heating companies in Romford. 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 up £14K (+217.7%) on the year before, to £7,730.
- Net assets rose in 6 of 8 year-on-year comparisons on record.
- Current assets of £8,897 against £4,212 owed within a year: 2.1 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 | £7,730 | £226 | £8,897 | £4,212 | 1 |
| 30 Nov 2024 | -£6,565 | £87 | £11K | £18K | 1 |
| 30 Nov 2023 | £6,568 | £9,593 | £14K | 1 | |
| 30 Nov 2022 | £457 | £12K | £5,506 | 1 | |
| 30 Nov 2021 | £150 | £25K | £11K | 1 | |
| 30 Nov 2020 | £917 | £29K | £12K | 1 | |
| 30 Nov 2019 | £649 | £9,487 | £8,838 | 1 | |
| 30 Nov 2018 | £288 | £8,768 | £8,480 | ||
| 30 Nov 2017 | £205 | £13K | £11K |
Where Cortex Plumbing & Heating Engineering Ltd is registered
The registered office is in Romford (RM3), in the Havering local authority area, London. Show RM3 7NS on a map.
Other trade companies in RM3
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- Emirate Fire and Security (Passive) LimitedInstallers
- Gamma Lifts LimitedInstallers
- Acc Mep LtdInstallers
- Fav Construction LimitedInstallers
- Zelda Cleaning Services LtdCleaning companies
- Hutton Heating and Air Conditioning LtdPlumbers and heating engineers
- Perfect Build Management LtdSpecialist contractors
What happens if Cortex Plumbing & Heating Engineering 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
- 10505229
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 30 November 2016 (9 years ago)
- Registered office
- 51 Ramsay Gardens, Romford, RM3 7NS
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 30 November (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 November 2025
- Last confirmation statement
- 29 November 2025
Filing notes for plumbing and heating companies
Plumbing and heating companies frequently work under CIS for main contractors and also directly for homeowners, so turnover can mix CIS and non-CIS income.
Similar companies in Romford
Other active plumbing and heating companies registered in Romford.
- Cox & Co Mechanical Services Ltd2012
- CP Utility Solutions Limited2023
- Crystal Heating & Cooling Ltd2025
- CS Property Services Group Ltd2025
- Custom Heating Limited2008
- Cvi Heating & Plumbing Ltd2026
- D&D Mechanical Solutions Ltd2026
- DC Plumbing & Gas Ltd2024
All plumbing and heating companies in Romford · All trades in Romford · Plumbers and heating engineers across the UK
Frequently asked questions
When are Cortex Plumbing & Heating Engineering Ltd's accounts due?
Cortex Plumbing & Heating Engineering 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 Cortex Plumbing & Heating Engineering 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 Cortex Plumbing & Heating Engineering Ltd still trading?
Cortex Plumbing & Heating Engineering 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 Cortex Plumbing & Heating Engineering Ltd do?
Cortex Plumbing & Heating Engineering Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Cortex Plumbing & Heating Engineering Ltd?
Cortex Plumbing & Heating Engineering Ltd was incorporated on 30 November 2016, 9 years ago.
What is the penalty if Cortex Plumbing & Heating Engineering 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 Cortex Plumbing & Heating Engineering 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.