He attended Ysgol Gyfun Gymraeg Glantaf with younger brother Nicky Robinson.
He immediately recovered his best form, leading to him gaining a place in the Wales squad to Argentina where he started both tests scoring one try.
They played their first test together against Ireland at Lansdowne Road in August 2003 in a Rugby World Cup warm-up fixture.
Robinson left the Blues following the 2008–09 Magners League, signing with the ambitious Top 14 side Toulon.
After the 2009–10 Top 14 season, he was linked with a possible return to the Celtic League with Italian expansion team Aironi, but ultimately decided to stay in France, signing with newly promoted Agen for the 2010–11 Top 14 season.