Richardson joins Warriors after a dual stint at Exeter Chiefs and Cornish Pirates.
Richardson's career started playing rugby at Cargilfield Prep School in Edinburgh. Fin next attended nearby Merchiston Castle School, which since 1966 has produced 64 full international players.
As well as playing in BUCS Super Rugby as a student at the University of Exeter where he helped his team obtain the championship title in a close final against Durham University in 2022, Richardson has represented Scotland on the international stage. The tighthead prop has represented Scotland's U20s in both the Six Nations and World Championship Competitions.