Variety Staff Follow Us on TwitterIvor Novello-winning artist and songwriter Jamie Cullum has signed a global publishing deal with Sony/ATV Music Publishing UK. It marks his return to the company after signing with EMI 18 years ago, according to an announcement.The noted singer, jazz musician and BBC Radio 2 broadcaster has collaborated with the likes of Paul McCartney, Pharrell Williams, Kendrick Lamar and Lang Lang, among others.