Mark Lewis joined the Cardiff Blues from the Celtic Warriors in 2004 and made his debut for the Blues against Worcester in a pre season friendly. Originally from Caerphilly, where he attended St Martins Comprehensive School Mark played rugby for Caerphilly juniors until the age of 16 when he joined Pontypridd RFC Youth Team. While playing for Ponty Youth at Under 19 and 21 Age Grade Level he represented Wales Under 21's. He made his senior debut for Pontypridd in 2002-03 season before joining the Celtic Warriors in 2003. An accomplished golfer Mark plays off a handicap of zero.