[1] Morison attended St Columba's School in Kilmacolm,[2] then joined the Scottish Youth Theatre before being accepted into the Guildhall School of Music and Drama in London at the age of 17.
[1] She graduated from the Guildhall School of Music & Drama in 2011, after attending workshops with Charlotte Munkso at Prima del Teatro and with the Royal Shakespeare Company.
[5] In 2020, Morison appeared in a main role as Chell in the Michael Caton-Jones directed Our Ladies, the world premiere of which, was held at the 2019 BFI London Film Festival on 4 October.
[8][9] Morison performed another lead role in the 2018 production of The Prime of Miss Jean Brodie at the Donmar Warehouse.
[10][11] Morison received a nomination at the 2018 Evening Standard Theatre Awards for the Emerging Talent Award for her performance as Sandy in The Prime of Miss Jean Brodie at the Donmar Warehouse in 2018.