The OHTA are grateful for the ongoing support of the External Advisory Council, who provide insight and advice as required having previously served on the OHTA board.

The External Advisory Council is made up of:

• Roger Alesbury (UK); Founder and ongoing advisor, former BOHS president
• Noel Tresider (Australia); Former OHTA Board member, early representative of the formation of OHTA and former chair, IOHA NAR Committee; AIOH President 1998 -1999, and IOHA President 2011-2012
• Nancy McClellan (US); Former OHTA Board member, and former Co-Chair OHTA
• David O’Malley (UK); Former OHTA Board member, early representative to the formation of OHTA and ongoing advisor, former BOHS president