Philippe Alexis started practicing Ashtanga in 1995 with John Scott in London. Since then, he has studied ashtanga yoga with many teachers including Dena Kingsberg, Lino Miele, David Roche, Tim Miller and Kirsten & Mitchell. He was given the opportunity to start teaching at YiY in 2000 by the studio's owner, Joseph Hentz, for which he will always be grateful.He first traveled to India in 2009 and again in 2012. During that time he studied with Sharath Jois, Pattabhi Jois' grandson. He established a pranayama practice in 2011 and has been practicing Zen meditation since 1998 at Kannondo.
Here's more about Philippe in the January 2012 teacher of the month article.
He runs his own company which does web development.