Dr Who co-stars Kylie Minogue and David Tennant have “set tongues wagging” with a secret meeting at a London theatre.

The pair - who appeared together in the Dr Who Christmas special together - went to see Cinderella together at the Old Vic under the cover of secrecy.

A source tells the Mail, “They kept the visit top secret and slipped in and out before anyone in the theatre had a chance to notice an A-list star and a famous actor were in the stalls.”

The pair have reportedly maintained a close relationship with regular phone calls, although Tennant is currently seeing BBC worker Bethan Britton and Kylie has admitted she has started dating again - although she has refused to divulge any names.