Dr O'Neill graduated from Leeds University in 1995, and started working at the practice in 1996. He became a partner in the practice in 2003 and assumed full ownership in 2006. He is also a trainer for the Yorkshire Deanery's Dental Foundation Training Scheme.

Graduated from Bristol University in 1992 and joined the practice in 2000.

Graduated from Leeds University in 2007 and joined the practice in 2007.

Graduated from Leeds University in 2007 and joined the practice in 2010.

Graduated from Leeds in 2008 and joined the practice in 2008.

Graduated from Leeds University 1979 and joined the practice in 1995.

Graduated from Leeds University in 2011 and joined the practice in 2011.

Graduated from Leeds in 2011 and joined the practice in 2011.