Born in Adelaide, Grant studied at the Royal College of Music in London and was a member of the Jette Parker Young Artists Programme.
For the ROH he has performed Ping/Turandot, Harlequin/Ariadne auf Naxos, Schaunard/La bohème and Billy Wayne Smith in Anna Nicole.
Other opera credits include Yeletsky/Queen of Spades, Zurga/Pearl Fishers (Opera Holland Park); Forester/Cunning Little Vixen and Don Giovanni (Garsington Opera); Abraham/Clemency (Scottish Opera), Robin Oakapple/Ruddigore (Opera North), Schaunard/La bohème (Glyndebourne), Marcello/La bohème at the Royal Albert Hall (Raymond Gubbay), Demetrius/Midsummer Night's Dream (Madrid & Berlin), Ned Keene/Peter Grimes (Gran Canaria) and Mike in John Adams' I Was Looking at the Ceiling (Rome). For English Touring Opera he has sung the title role in The Barber of Seville, Orestes in Gluck's Iphigénie en Tauride, Marcello/La bohème, Hector/King Priam, and Nello in Pia de' Tolomei.
For State Opera of South Australia, Don Giovanni, Count/Le nozze di Figaro and Starbuck in Jake Heggie's Moby Dick (Adelaide) as well as Orestes in Iphigénie en Tauride (Pinchgut Opera Sydney).
Future engagements include Zurga/Pearl Fishers (Opera Queensland) and Sir Thomas in Dove's Mansfield Park (Grange Festival).