Suranne Jones has described David Tennant as "humble" and "charismatic".
Jones stars alongside Tennant in new drama Single Father and explained that she loved working with him.
"Obviously Doctor Who was massive so I was really excited about meeting David," she told the Radio Times. "He's the funniest, most charismatic, intelligent, humble actor."
Jones also revealed details of the show, saying: "[Tennant] plays Dave, recently widowed and struggling to bring up his children, while I play his widow's best friend. We're brought together by grief, and emotions get complicated.
"What I love about the drama is that it asks: how would you react in that situation? It's wonderfully grown-up and it feels authentic."
Single Father is expected to air on BBC One in October.