He released two albums Kavana (1997) and Instinct (1999) and enjoyed a number of chart singles including "Crazy Chance". Other songs included "Thank You", "Special Kind of Something", "I Can Make You Feel Good" (his debut UK Top 10 hit, reaching #8), "MFEO" (another No.8 hit) and "Will You Wait For Me?".
He resided in Los Angeles, California for several years where he appeared in commercials, the MTV series Undressed, and had a publishing deal as a songwriter. In 2005, he appeared in the music video for Today, by his friend Melanie Brown, before returning to the United Kingdom.
In 2006, Kavana played a recurring role in a number of episodes of E4's Hollyoaks: In the City. He also began working with Jools Holland as a session musician and backing vocalist. He appeared as a contestant on Grease Is the Word in April 2007 and got put through to 'boot camp', where he was paired with Alison Crawford. Although Crawford was eliminated, Kavana booked a place in the final of the competition, where he was declared runner-up on 9 June 2007.
In 2008, he appeared in the theatre production The Extra Factor, a fictional on-stage musical based on the X Factor.
In 2011 he toured with G*Mania, a musical show inspired by the TV series Glee. The cast then recorded a Christmas single, a cover of "Don't Stop Believin'" by Journey. Kavana appeared in the music video for the song.
He appeared on the 2013 series of BBC Saturday night singing show The Voice UK where he failed to progress past the audition stage.