Robert Ash was born and raised in Yorkshire.
 
He worked for the Home Office for almost 14 years during which time he took a break to study for a degree in Religious Studies.
After leaving the Civil Service he spent several years working in the private sector, then returned to full-time education earning a doctorate (Ph.D.) in sociology of religion from Leicester University.
 
In 2002 he was granted semichah by Leo Baeck College and was appointed Rabbi at Newcastle Reform Synagogue. In 2007 he became Rabbi of Beit Emanuel Progressive Synagogue in Johannesburg, South Africa.