Our Treforest office has been in operation for over 30 years. Here you will find a mix of our accounts, tax and admin teams, along with Managing Director Lewis Van Emden and Tax Director, Mark Aherne.


Our Cwmbran office was established following the integration of Griffiths Green Arnold in February 2018.   The office continues to operate with full consultancy support from previous Directors, Kevin Davies and Lloyd Arnold. Gareth Francis joins the established team of 12 with operational responsibility and is further supported by one of our long serving Senior Managers, Catherine Ingram.

O’brien & Partners - Chartered Accountants & Registered Auditors.
Member of The Institiute of Chartered Accountants in England and Wales Registered to carry on audit work in the UK and Ireland and regulated for a range of investment business activities by the Institute of Chartered Accountants in England and Wales.

  • Twitter Basic Square
  • LinkedIn Social Icon


Details of our professional indemnity insurer’s agent is Aqueous Management Limited trading as Aqueous Underwriting (Registered in England under company 11453265) Registered at 5th Floor, Marlow House, 1A Lloyd’s Avenue, London, ECN 3AA.The territorial coverage is worldwide excluding professional business carried out from an office in the United States of America or Canada.


Our offices are based in Treforest and Cwmbran (see contact page for further details). 


O’Brien & Partners and Griffith Green Arnold are trading names of O'Brien & Partners KVE Ltd.

© 2017 O'brien and Partners - All Rights Reserved

Design by Shed Marketing

627 O'Brien & Partners_XGL.png