Active12377485Private limited companyHarrow

CORETONOMY LIMITED

Significant control: Mardy Cow Limited (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From public filings as at 31 Aug 2026; may contain errors or be out of date.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

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Registered activity: Business and domestic software development (SIC 62012). We’re building product and service lists for UK companies. Get this one when it’s ready.

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01

Summary

Generated from filed data · no estimates

CORETONOMY LIMITED is an active private limited company (company number 12377485) incorporated on 24 December 2019, registered in Harrow. Its registered activity is business and domestic software development (SIC 62012). Latest small accounts cover the period ending 31 December 2025, showing net assets of −£2.04m and cash of £9,502, with 5 employees on average. Net assets fell 7% on the prior period (−£1.91m).

Peer position · net assets

By net assets it sits in the bottom quarter of 4,366 comparable companies in Greater London (median £1,196, upper quartile £29k).

02

Ownership and control

1 active
  • Mardy Cow Limited
    corporate entity, England & Wales · since 24 December 2019
    • owns 75–100% of shares
    • holds 75–100% of voting rights
    • can appoint or remove directors

Persons with significant control hold 25% or more of shares or voting rights. Smaller shareholdings are only listed in confirmation-statement documents. Directors and secretaries: see the officers list at Companies House.

03

Key dates

Incorporated
24 December 20196 yrs ago
Next accounts due
30 September 2027in 341 days
Confirmation statement due
7 January 2027in 75 days

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

04

Activity

SIC 62012
Business and domestic software development
Accounts type
Total Exemption Full
Size band
MicroCompanies Act thresholds
05

Financials

2 periods on record · latest ending 31 December 2025
Net assets
−£2.04m
vs Dec 2024
Cash at bank
£9,502
+27%vs Dec 2024
Turnover
Not reported
Employees
5
No changevs Dec 2024
Net assets
−£2.04m
Cash at bank
£9,502
Average employees
5
Filed accounts by period, newest first
Period endNet assetsCashDebtorsCreditors <1yTurnoverProfitEmployees
31 December 2025−£2.04m£9,502£2,594£2.06m——5
31 December 2024−£1.91m£7,499£6,820£1.92m——5
Current ratio0.01Current assets ÷ creditors within one year
Cash per employee£1,900Cash ÷ average employees

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

06

Filing and accounts signals

Facts from the register · no rating
  • Net assets below zeroNet assets £-2,043,106 at 31 December 2025
  • Current assets below creditors within one yearCurrent ratio 0.01
  • Incorporated five or more years agoIncorporated 24 December 2019

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.

07

Timeline

Newest first
  1. Next accounts duein 341 days
  2. Confirmation statement duein 75 days
  3. Accounts period endNet liabilities £2.04m · small accounts
  4. Accounts period endNet liabilities £1.91m · small accounts
  5. Incorporated
08

Similar companies in Greater London

Same activity (business and domestic software development), closest in incorporation date
09

Reminders for CORETONOMY LIMITED

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.