Jennifer Saunders as Sister Gilpin

Bally Gill as Dr Valentine

David Bradley as Joe Colman

Russell Tovey as Colin Colman

Derek Jacobi as Ambrose

Judi Dench as Mary

JP Conway as Kieran

Jesse Akele as Nurse Pinkney

Lorraine Ashbourne as Mrs Earnshaw

Nivedita Bhargava as Mother

Nicholas Burns as Minister

Paul Butterworth as Richard

Eileen Davies as Molly

Nishu Dikshit as Ruma

Patricia England as Mavis

Vincent Franklin as Mr Salter

Gerard Horan as Mr Earnshaw

Catherine Jayes as Pianist

Rajinder Kaur as Nani

Harsheen Kaur as Shirina

Jeffery Kissoon as Neville

Julia McKenzie as Mrs Maudsley

Arian Nik as Abdul

Amanda Root as Cynthia

Louis Ashbourne Serkis as Andy

Rhea Sharma as Juneeta

Marlene Sidaway as Lucille

Ross Tomlinson as Gerald

Marjorie Yates as Hazel

Dawn Batty as Passer by

Jessica Baglow as Dr Jess (uncredited)

Ray Burnet as Opera Goer (uncredited)

Darren Charman as George (uncredited)

Minouche Kaftel as Mayor (uncredited)

Dennis O'Donnell as Patient (uncredited)

Linus Scheithauer as Opera Guest / Junior Board Member (uncredited)

Alfredo Tavares as Politician (uncredited)

Jon Wennington as Mayor's Husband (uncredited)