Only Murders in the Building season 6 casting Olivia Colman is nothing short of genius — now stream the Oscar nominated political biopic that first made her Meryl Streep's co-star

17-year-old me was weirdly obsessed with this film

26 Jul 2026, 13:00 by https://www.techradar.com/uk/author/jasmine-valentine · TechRadar

Features By Jasmine Valentine Published 26 July 2026

Okay, so this isn't her new role. (Image credit: Netflix)

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The guest cast list for Only Murders in the Building season 6 is now so stacked that I'm surprised creators know where to fit everyone.

As Oliver (Martin Short), Charles (Steve Martin) and Mabel (Selena Gomez) head to London, UK to solve the death of a global podcaster, the below Brits will be joining the action:

Jennifer Saunders
Sean Teale
Simone Ashley
Amar Chadha-Patel
Rhea Norwood
Matthew Beard
Sharon Horgan
Geri Halliwell Horner
Martin Freeman
Jamie Demetriou
Anjana Vasan
Jane Horrocks
Derek Jacobi
Lesley Nicol
David Tennant
Nicola Coughlan
Jodie Whitaker
Jim Broadbent
Adrian Lukis
Richard Ayoade
Kathryn Hunter

This is all before the Disney+ and Hulu show slyly revealed its most recent casting through an Instagram carousel: England's Oscar-winning hero, Olivia Colman.

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She's seen filming scenes solo while sat on a sofa, but the post shows that Mabel and Loretta (Meryl Streep) have also been at the same location. Put two and two together and there's a very high chance that Streep and Colman could be sharing the screen... and this is exciting to me.

Why? This will be the first time that the pair are reunited on screen since the 2010 British political biopic that I was unusually feral for as a 17-year-old girl. It's also the performance that won Streep her most recent Best Actress Oscar... and frankly, it all has to be seen to be believed.

Only Murders in the Building season 6 will be Olivia Colman and Meryl Streep's first onscreen appearance since The Iron Lady

The Iron Lady Official Movie Trailer [HD] - YouTube

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Only Streep could take a figure as politically and culturally divisive as former UK Conversative Prime Minister Margaret Thatcher and turn her into an Academy Award winner.

The 2011 biopic The Iron Lady explores her life and career as the UK's longest-serving Prime Minister, with an older Thatcher looking back over her life after the death of her beloved husband, Denis (Jim Broadbent).

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