Active10505229Private limited companyRomford

CORTEX PLUMBING & HEATING ENGINEERING LTD

Owned by Tadeusz Diakowski (75–100%)

Companies HouseCompanies House

From public filings as at 31 Aug 2026; may contain errors or be out of date. Verify at Companies House · Terms

01

Summary

Generated from filed data · no estimates

CORTEX PLUMBING & HEATING ENGINEERING LTD is an active private limited company (company number 10505229) incorporated on 30 November 2016, registered in Romford. Its registered activity is plumbing, heat and air-conditioning installation (SIC 43220). Latest small accounts cover the period ending 30 November 2025, showing net assets of £7,730 and cash of £226, with 1 employee on average. Net assets rose 218% on the prior period (−£6,565). Across the last 3 periods on record the net-asset trend is rising.

Peer position · net assets

By net assets it sits in the upper half of 3,492 comparable companies in Greater London (median £4,840, upper quartile £27k).

02

Key dates

Incorporated
30 November 20169 yrs ago
Next accounts due
30 August 2027in 312 days
Confirmation statement due
14 December 2026in 53 days

Due dates are expected from Companies House filing rules; confirm on the official register before relying on them.

03

Activity

SIC 43220
Plumbing, heat and air-conditioning installation
Accounts type
Total Exemption Full
Size band
MicroCompanies Act thresholds
04

Financials

3 periods on record · latest ending 30 November 2025
Net assets
£7,730
vs Nov 2024
Cash at bank
£226
+160%vs Nov 2024
Turnover
Not reported
Employees
1
No changevs Nov 2024
Net assets
£7,730
Cash at bank
£226
Average employees
1
Filed accounts by period, newest first
Period endNet assetsCashDebtorsCreditors <1yTurnoverProfitEmployees
30 November 2025£7,730£226£8,671£4,212——1
30 November 2024−£6,565£87£11k£18k——1
30 November 2023−£6,568£404£9,189£14k——1
Current ratio2.11Current assets ÷ creditors within one year
Cash per employee£226Cash ÷ average employees

Figures as filed in iXBRL accounts at Companies House. "—" means the line was not reported in that filing.

05

Filing and accounts signals

Facts from the register · no rating
  • Net assets above zeroNet assets £7,730 at 30 November 2025
  • Net assets up 10% or more on the prior period+217.7% vs prior period
  • Current assets at least 1.5× creditors within one yearCurrent ratio 2.11
  • Three or more accounting periods on record3 periods on record
  • Incorporated five or more years agoIncorporated 30 November 2016

Neutral facts read from the register and filed accounts, each with its evidence. They are not a rating, a prediction or advice, and may be incomplete or out of date. How each signal is derived.

06

Ownership and control

1 active
  • Mr Tadeusz Diakowski
    Individual · since 30 November 2016
    • owns 75–100% of shares

Persons with significant control hold 25% or more of shares or voting rights. Smaller shareholdings are only listed in confirmation-statement documents.

07

Timeline

Newest first
  1. Next accounts duein 312 days
  2. Confirmation statement duein 53 days
  3. Accounts period endNet assets £7,730 · small accounts
  4. Accounts period endNet liabilities £6,565 · small accounts
  5. Accounts period endNet liabilities £6,568 · small accounts
  6. Incorporated
08

Similar companies in Greater London

Same activity (plumbing, heat and air-conditioning installation), closest in incorporation date
09

Reminders for CORTEX PLUMBING & HEATING ENGINEERING LTD

Get an email before each filing deadline — accounts and confirmation statement — so nothing is late.

Source: Companies House register, snapshot 2026-08-31; accounts from the Companies House accounts data product. Open Government Licence v3.0. View on Companies House. Methodology · About · Markdown.