Alexis studied performance at the Guildhall School with Jane Rogers. He has performed widely with early music ensembles including the Dufay Collective, Florilegium, Horses Brawl and Musicians of London Wall and has appeared at Royal Festival Hall, Barbican, Queen Elizabeth Hall and Cadogan Hall.

Alexis is an active folk musician, with over ten years of experience as a ceilidh caller and fiddler. He has taught several seasons at Dartington International Summer School.

In 2017 he returned to Dartington to work alongside Martin Carthy and Eliza Carthy, teaching folk music and song. He is a member of the London-based old-time band The Croshaw Family.

He has performed live on In Tune and The Early Music Show (BBC Radio 3), Front Row  (BBC Radio 4), and Classic FM.

He has been seen and heard as a musician in major feature films, including The Favourite (Yorgos Lanthimos, 2018), and has coached actors in their on-screen musical performance roles for titles including Mary Queen of Scots (Josie Rourke, 2018).