In January 2005, McFly guest-starred in an episode of the long-running BBC One drama series Casualty.
Judd met his wife, former Escala violinist Brittany "Izzy" Johnston, when she appeared as part of the string section on McFly's 2005 concert tour. They married in 2012 and have two children together. Their first child, Lola Rose Emma, was born after they struggled to conceive with IVF, and in 2017, Kit Harry Francis Judd was born after being conceived naturally.