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BDO Binder Hamlyn

A simplified family tree for the firm of BDO Binder Hamlyn showing the development of the firm and how the firm's name has evolved.

Family Tree

This tree is reproduced with the kind permission of Peter Boys and Accountancy magazine. It was originally published in the February 1989 issue of Accountancy (p139).


Ladbury, Collison & Viney 1860s not Ladbury, Collinson & Viney 1860s

Collison & Viney 1885 not Collinson & Viney 1885

Deutsche Warentreuhand not Deutsche Warentreuland


In 1994 thirteen offices, together with half the Bristol office, of BDO Binder Hamlyn merged with Stoy Hayward to form BDO Stoy Hayward, seven offices joined Arthur Andersen, two joined Grant Thornton and the other half of the Bristol office and the Birmingham office joined Touche Ross & Co. The offices which joined Arthur Andersen practised in the name of Binder Hamlyn until January 2002 when they adopted the Arthur Andersen name. (Accountancy, August 1994, p.13, October 1994, p.13 and November 1994, p.13, and Notice of the Soil Association Annual General Meeting 2002, p.3.)

The firm became a single national partnership in 2002 and converted to LLP status in January 2004. BDO acquired John Gordon Walton, Leeds in October 2004 and the Bristol, Manchester and Southampton offices of Numerica in June 2005 (BDO website: Brief History Of BDO).

BDO LLP merged with PKF (UK) LLP in March 2013. From 28 March 2013, the combined firm operated as one, under the BDO brand and as part of BDO’s international network (Press release dated 28 March 2013: BDO and PKF merger completes).

What's in a name: Firms' simplified family trees

Between January and December 1989, accounting historian Peter Boys prepared a series of simplified family trees showing the development of the big accountancy firms of the day.

The original trees from 1989 have been reproduced here with a series of textual updates from Peter Boys which have taken the story forward to May 2005, the 125th anniversary of ICAEW. Since then, the staff of the ICAEW Library & Information Service have added notes on further changes that have taken place.

If you are aware of any further information which would add to or improve the accuracy of the family trees please let us know. You can contact us at library@icaew.com

© Original trees are copyright of Accountancy Magazine and CCH.

© Updates are copyright of Peter Boys.