David Tennant and Catherine Tate are spotted on set filming dramatic Doctor Who scenes in Cardiff

Doctor Who's Yasmin Finney admits it's 'surreal' to be filming with David Tennant and Catherine Tate

David Tennant holds up sonic screwdriver as he films scenes with Catherine Tate and Yasmin Finney

Yasmin Finney is spotted on the Doctor Who set with David Tennant for the first time