Gareth Davies came to rugby quite late in comparison to most. Born in Cearphilly, he attended Lewis Boys School in Ystrad Mynach and only began playing rugby for Ystrad Mynach from the age of sixteen.
At twenty-three he began playing for Cardiff RFC, this opened up regional opportunities for the fly half who was picked up by the Cardiff Blues in 2010. Davies also spent a year with Wales sevens during the 2010/11 season. Gareth Davies has made twenty-three appearances for the region.