Best Interests - Cast

Name	Episodes	Known for
Sharon Horgan Nicci Nicci See fewer	4	Catastrophe (2015)
Niamh Moriarty Marnie Marnie See fewer	4	Silver and the Book of Dreams (2023)
Michael Sheen Andrew Andrew See fewer	4	Masters of Sex (2013)
Alison Oliver Katie Katie See fewer	4	Saltburn (2023)
Melissa Collier Alice Alice See fewer	4	Suspicion (2022)
Gary Beadle Frank Frank See fewer	3	In the Heart of the Sea (2015)
Noma Dumezweni Samantha Samantha See fewer	3	The Little Mermaid (I) (2023)
Des McAleer Eddie Eddie See fewer	3	Hunger (2008)
Lisa McGrillis Brenda Brenda See fewer	3	Last Night in Soho (2021)
Shane Zaza Fred Fred See fewer	3	Happy Valley (2014)
Chizzy Akudolu Mercy Mercy See fewer	3	Holby City (1999)
Mica Ricketts Hannah Hannah See fewer	3	Here We Go (2020)
Jack Morris Tom Tom See fewer	3	The Guernsey Literary and Potato Peel Pie Society (2018)
Buffy Davis Gladys Gladys See fewer	3	Anna Karenina (I) (2012)
Poppy Lemon Young Marnie Young Marnie See fewer	2	Best Interests (2023)
Daisy Lemon Young Marnie Young Marnie See fewer	2	Best Interests (2023)
Mat Fraser Greg Greg See fewer	2	Unarmed But Dangerous (2009)
Lucian Msamati Derek Derek See fewer	2	See How They Run (2022)
Billie Gadsdon Young Katie Young Katie See fewer	2	Cruella (2021)
Anneika Rose Francesca Francesca See fewer	2	Line of Duty (2012)
Pippa Haywood Judge Spottiswood Judge Spottiswood See fewer	2	Green Wing (2004)
Lenny Rush George George See fewer	1	Am I Being Unreasonable? (2022)
Kiruna Stamell Jane Jane See fewer	1	The Best Offer (2013)
Nihal Arthanayake Nihal Arthanayake Nihal Arthanayake See fewer	1	Children of Men (2006)
Libby Rodliffe Kathy Kathy See fewer	1	Spencer (2021)
Sid Sagar Ryan Ryan See fewer	1	Belfast (2021)
Richard Lintern James James See fewer	1	The Bank Job (2008)
Kevin Eldon Dr. Sendak Dr. Sendak See fewer	1	Hot Fuzz (2007)
John Burton Brian Brian See fewer	1	Father Brown (2013)
Nina Marlin Teenage Katie Teenage Katie See fewer	1	Supernova (II) (2020)
Esther Hall Beatrice Beatrice See fewer	1	Queer as Folk (1999)
Taylor Mai Munday Young Marnie Young Marnie See fewer	1	Best Interests (2023)
Jonathan Rhodes Dr. Nescott Dr. Nescott See fewer	1	Scoop (2024)
Maiya Butler Elicia Shadow Elicia Shadow See fewer	1	Best Interests (2023)
Hadley Karimloo Joe Joe See fewer	1	Best Interests (2023)
Ronan Keating Ronan Keating Ronan Keating See fewer	1	Notting Hill (1999)
Kerry Shale Dr. David Pankerman Dr. David Pankerman See fewer	1	Wrath of Man (2021)
Claire Cage Harriet Harriet See fewer	1	Submarine (2010)
Ruth Clarson Court Employee Court Employee See fewer	1	Eternals (2021)
Ella Hunter-Clark Assistant Cinema Manager Assistant Cinema Manager See fewer	1	The Nevers (2021)
Mark Rainsbury Family Member (uncredited) Family Member (uncredited) See fewer	1	The Jetty (2024)
Nicholas Joy Photographer (uncredited) Photographer (uncredited) See fewer	1	The Undeclared War (2022)