David Tennant Joins Seven New Stv Cast Additions for Season 6
stv has expanded its Season 6 cast with seven recurring additions, led by David Tennant, Nicola Coughlan, Jodie Whittaker, Jim Broadbent, Richard Ayoade, Adrian Lukis and Kathryn Hunter. The move lands as Only Murders in the Building films its first season outside the U.S., with production now underway in the UK.
London Changes the Mix
The new lineup adds three Doctor Who names to a show that has already built its identity around guest turns and tightly managed ensemble chaos. Tennant, Whittaker and Broadbent arrive with credits that range from long-running franchise TV to an Oscar for Broadbent in 2001, giving Season 6 a cast profile that fits the show’s move from New York City to London.
That location shift matters in practical terms because Charles, Oliver and Mabel are leaving New York City for London’s newest mystery. A first shoot outside the U.S. turns the casting announcement into part of the production move, not just a list of familiar names.
Tennant, Coughlan, Whittaker
Tennant comes in with recent screen work that keeps him active across film and television, including a cameo in the Season 2 finale of The Four Seasons and a turn as Tony Baddingham in Rivals. Coughlan has moved from every season of Bridgerton to The Magic Faraway Tree and a hosting stint on Saturday Night Live UK, while Whittaker arrives after Office Romance and Frauds.
Broadbent brings the cleanest awards signal in the group: a Best Supporting Actor Oscar for Iris in 2001, plus an Emmy for The Street. A cast that includes him, Tennant and Whittaker gives the sixth season three Doctor Who figures in one run, a neat bit of overlap for a series that already trades on recognizable faces without turning into pure nostalgia.
Ayoade and the UK roster
Richard Ayoade, Adrian Lukis and Kathryn Hunter round out the recurring group, with Ayoade coming off The Phoenician Scheme and The Wonderful World of Henry Sugar and set to join the voice cast of Sonic the Hedgehog 4. Lukis was recently seen in How To Make A Killing and Heads of State, while Hunter joins a season that is still taking shape in the UK rather than sitting in post-production.
The earlier batch of recurring additions matters too: Jennifer Saunders, Sean Teale, Simone Ashley, Amar Chadha-Patel, Rhea Norwood, Matthew Beard, Sharon Horgan, Martin Freeman, Geri Halliwell-Horner, Jamie Demetriou, Anjana Vasan, Jane Horrocks, Derek Jacobi and Lesley Nicol were all announced recently. By the time Season 6 reaches viewers, the show’s London chapter will have more than enough cast depth to make the relocation feel like a production strategy, not a one-off plot detour.
For viewers, the key takeaway is simple: Season 6 is not just changing scenery, it is changing the cast economy around the mystery. With filming underway in the UK and seven new recurring names added on top of the prior wave, the season is being built to work as a London production from the ground up.
