Since the 1980s he has fulfilled a number of large commissions, including Sudden Time (for orchestra), ThreeINVENTIONS (for chamber orchestra) and Antara (for ensemble and electronics, realised at IRCAM and the first composition ever published using theSibelius notation program).
His first operatic work Into The Little Hill, a collaboration with playwright Martin Crimp, was premiered at the Festival d'Automne in Paris in 2006 and has toured widely on both sides of the Atlantic. It received its London premiere at the Royal Opera House in February 2009.
As a conductor he regularly appears with some of the world's leading ensembles and orchestras, amongst them the London Sinfonietta, Ensemble Modern, the Cleveland and Concertgebouw orchestras, the Berlin Philharmonic and the Junge Deutsche Philharmonie. In 1999 he made his operatic debut conducting Pelléas et Mélisande at la Monnaie, Brussels and he has conducted numerous world premieres, important works by Wolfgang Rihm, Unsuk Chin, Grisey and Ligeti.
Benjamin was appointed Commander of the Order of the British Empire (CBE) in the 2010 Birthday Honours. He is a Chevalier dans l'ordre des Arts et Lettres and a member of the Bavarian Academy of Fine Arts, and was awarded the Deutsche Symphonie Orchester's first ever SchoenbergPRIZE for composition in 2002.