Professional career Harrison signed for the academy of his boyhood club,
Edinburgh Rugby, in June 2020. He made his
Pro14 debut in the rearranged Round 7 of the
2020–21 Pro14 against the , coming on as a replacement. Aged just 18 on his debut, he is currently the club's fourth-youngest debutant of all time. He joined
London Irish on a short-term loan on the 20 September 2022.
International career In June 2024, Harrison was called up to the senior Scotland squad for the first time, in preparation for a tour of
the Americas. He made his Scotland debut as a substitute in
a win against
Chile, in
Santiago on 20 July 2024. In his second appearance a week later, he again came off the bench and scored his first international try in
a 19-31 victory against
Uruguay in
Montevideo. In November 2024, Harrison was handed his first Scotland start in
a 59-21 win against
Portugal at
Murrayfield. ==External links==