Brian has conducted at many prestigious music festivals including Verona, Sydney, Vienna, Athens, Crete, Torre del Lago, Corsica, Bordeaux, Nimes and the Cannes Mozart Festival, in many cases performing as soloist as well. He was Music Director for the inaugural season of Australian National Chamber Opera and the Artistic Director and conductor of Toulon Chamber Orchestra and Camerata Atlantis, and was formerly the Music Director of the Bordeaux International Choir. He has often conducted the London Symphony Orchestra at the Barbican, and has conducted in numerous theatres all over France. He has recorded with the Royal Wallonie Orchestra in Belgium.

In the field of musical theatre, he has been Musical Director of the Mermaid Theatre and the New London Theatre in London and has conducted many West End shows.