Lewis Jones spent his early days playing for his school and for his local club at junior and youth level.
Jones was developed through the Cardiff Blues academy and picked up representative honours for Wales at age grade level.
The scrum half signed a senior deal with the region in 2012/13 and made his debut in the Anglo Welsh Cup game against Ospreys in 2011.
In 2013, Jones became the youngest player to reach 50 caps for the region. A valuable and popular squad member, Jones would go on to making his 100th appearance in the 2018/19 Heineken Champions Cup win over Lyon, scoring a try in the process.