Diales Group Plc

("Diales" or the "Company " or the "Group")

Appointment of Non-Executive Director

Diales Group Plc (AIM:DIAL), the leading global professional services consultancy to the construction and engineering industries, providing multi-disciplinary consultancy services including expert witness, claims and dispute resolution services, is pleased to announce the appointment of Jane Dumeresque as a Non-Executive Director of the Company with effect from today, 24 November 2025.

Jane brings to Diales extensive relevant experience from a career in executive leadership and non-executive director roles in a range of listed and private companies in the financial services sector. Jane is a chartered accountant and has served as a Non-Executive Director in a number of corporate, mutual and not for profit businesses. Jane will serve as Chair of the Group's remuneration committee and will become a member of the audit committee.

Mark Wheeler, Chief Executive Officer of Diales, said:

"I am very pleased to welcome Jane to the Board. Jane is an accomplished Non-Executive Director and has valuable experience of working in people-centric businesses like ours. With a long track record of achievement in a range of executive and non-executive roles, I am confident that she will bring to Diales a wealth of boardroom expertise, and we look forward to working with her."

Enquiries:

The following additional information is provided in accordance with Rule 17 and Schedule Two paragraph (g) of the AIM Rules for Companies:

Jane Grace Dumeresque (formerly Jane Grace Backes and Jane Grace Moir), is aged 67 and is, or has been during the previous five years, a director or partner of the following companies or partnerships: