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Other information technology service activities · Oxford, South East

Dionach

Dionach Ltd

Staff up 29%Back in profitActiveLatest figures: 2025Company only26 years on the register

Private limited company registered in Oxford, classed under “Other information technology service activities”.

Headline figures

FY to Dec 2025 · Company only

Turnover

For subscribers

Profit after tax

£570k

Net assets

For subscribers

Cash

For subscribers

Employees

For subscribers

Retained reserves

For subscribers

What the numbers say

4 findings from the figures, in plain English

Written by rules from the figures on this page. Not a forecast or a credit opinion.

History

Pro
£20212022202320242025
Profit after tax£570k
Turnover
Net assets
Cash
Employees
Retained reserves

Every figure for all 5 years

“—” means we did not find the figure in a source; it is never filled with an estimate.

Balance sheet and ratios

From the filed balance sheets · £

Balance sheet2022202320242025
Fixed assets
Current assets
of which debtors
of which cash
Creditors due within a year
Net current assets
Creditors due after a year
Net assets
Ratios
Return on equityProfit after tax as a share of net assets
Current ratioCurrent assets for every £1 owed within a year
Cash ratioCash for every £1 owed within a year
Creditors to assetsEverything owed to creditors as a share of fixed plus current assets

8 balance-sheet lines and 4 ratios, every year

A ratio appears only for years where every line it needs was filed. Lines are as tagged in the accounts; nothing is added up or estimated.

Timeline

Checked 2026-10-12

  1. Accounts
    Full accounts made up to 31 December 2025
  2. Accounts
    Accounts for a small company made up to 31 December 2024
  3. Shares
    Confirmation statement made on 12 August 2025 with no updates ANNOTATION Replaced a second filed CS01 (Statement of Capital and Shareholder Information) was replaced on 10/08/2026
  4. Directors
    Director's details changed for Mr Ewan Alistair Mckenzie on 11 August 2025
  5. Ownership
    Cessation of Ewan Alistair Mckenzie as a person with significant control on 22 October 2024
  6. Ownership
    Cessation of Gareth Paul Phillips as a person with significant control on 22 October 2024
  7. Ownership
    Notification of Sébastien Daniel Kher as a person with significant control on 22 October 2024
  8. Directors
    Termination of appointment of James Frank Thomas as a director on 22 October 2024
  9. Directors
    Appointment of Mr Sébastien Daniel Kher as a director on 22 October 2024
  10. Directors
    Termination of appointment of Lisa Michelle Bragg as a director on 22 October 2024
  11. Directors
    Termination of appointment of William John Bragg as a director on 22 October 2024
  12. Directors
    Termination of appointment of Raymond Rizk as a director on 22 October 2024
  13. 5 earlier
    1. Directors
      Termination of appointment of Gareth Paul Phillips as a director on 22 October 2024
    2. Ownership
      Cessation of William John Bragg as a person with significant control on 23 March 2023
    3. Charges
      Satisfaction of charge 039081680004 in full
    4. Accounts
      Unaudited abridged accounts made up to 31 December 2023
    5. Accounts
      Unaudited abridged accounts made up to 31 December 2022

From the Companies House filing history. Routine confirmation statements are left out, and a run of the same filing is shown once.

Questions people ask

›What does Dionach do?

Private limited company registered in Oxford, classed under “Other information technology service activities”. In its own words: “Dionach is your trusted cybersecurity partner—offering compliance, pen testing, risk management, and vulnerability assessments.”

›How much turnover does Dionach make?

Answered in the full report

›Is Dionach profitable?

Yes: it made a profit after tax of £570k in the year to 31 December 2025, its latest filed accounts.

›How many people work at Dionach?

Answered in the full report

›Who runs and owns Dionach?

Answered in the full report

›Where is Dionach based?

Its registered office is Unipart House, Garsington Road, Oxford, OX4 2PG, in Oxford, South East.

›When was Dionach founded?

Dionach Ltd was incorporated on 17 January 2000.

›Is Dionach still trading?

The register lists Dionach Ltd as active.