Alexander represented the Perth City South Ward as a Councillor from 1999 until 2017.  He has served as both Leader and Deputy Leader of the Scottish Conservative Group of Councillors, Chair of Perth & Kinross Leisure, Convenor of Community Safety and Convenor of the Scrutiny Committee. He was elected to the Scottish Parliament in 2016. 

Alexander also serves as a member of the Board of Management of Bowerswell House; as Chairman of Perth Access Cars; as a representative of Fairfield Trust Ltd: President and active member of the Perth Operatic Group and Chairman of Stepping Stones Theatre Company.   He is also a High Constable of the City of Perth.

Alexander was honoured to be awarded the MBE in the Queen’s New Year Honours List of 2016.