Sometimes it feels like the British film industry is one big repertory company with the same actors turning up in many of the movie and nowhere is this more evident than with the cast of the Harry Potter movies.

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To make my point and because the internet loves this sort of stuff, here are lots of other films that feature multiple players from Harry Potter series:

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(There are a number of films that have two of the HP cast; Brooklyn, A Little Chaos, Skyfall, Marigold Hotel, War Horse – but for the purposes of this list you need at least three to qualify.)
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Chicken Run – 3 HP cast members

Miranda Richardson

Timothy Spall

Imelda Staunton

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Sleepy Hollow – 3 HP cast members

Miranda Richardson

Michael Gambon

Richard Griffiths

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Much Ado About Nothing – 3 HP cast members

Kenneth Branagh 

Emma Thompson

Imelda Staunton 

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Love Actually – 3 HP cast members

Alan Rickman

Emma Thompson

Bill Nighy

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Dad’s Army – 3 HP cast members

Michael Gambon

Bill Nighy

Toby Jones

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Postman Pat – 3 HP cast members

Jim Broadbent

David Tennant

Rupert Grint

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Henry V – 3 HP cast members

Kenneth Branagh

Emma Thompson

Robbie Coltrane

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The Lady in the Van – 3 HP cast members

Maggie Smith

Jim Broadbent

Frances de la Tour

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Bridget Jones Diary – 3 HP cast members

Jim Broadbent

Gemma Jones

Shirley Henderson

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Effie Gray – 3 HP cast members

Emma Thompson

Julie Walters

Robbie Coltrane

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Hugo – 3 HP cast members

Richard Griffiths

Frances de la Tour

Helen McCrory

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Nanny McPhee – 3 HP cast members

Emma Thompson

Kelly MacDonald

Imelda Staunton

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Nanny McPhee and the Big Bang – 4 HP cast members

Emma Thompson

Maggie Smith

Ralph Fiennes

Rhys Ifans

  

Arthur Christmas – 4 HP cast members

Jim Broadbent

Bill Nighy

Imelda Staunton

Robbie Coltrane

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Finding Neverland – 4 HP cast members

Julie Christie

Ian Hart

Kelly MacDonald

Toby Jones

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Great Expectations – 4 HP cast members

Helena Bonham Carter

Ralph Fiennes

Robbie Coltrane

Jessie Cave

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Frankenstein – 4 HP cast members

Helena Bonham Carter

Kenneth Branagh

Robert Hardy

John Cleese

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In Bruges – 4 HP cast members

Brendan Gleeson

Ralph Fiennes

Ciarán Hinds

Clémence Poésy 

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Brave – 4 HP cast members

Emma Thompson

Julie Walters

Robbie Coltrane

Kelly MacDonald

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Paddington – 4 HP cast members

Michael Gambon

Imelda Staunton

Julie Walters

Jim Broadbent

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Sweeney Todd – 4 HP cast members

Helena Bonham Carter

Alan Rickman

Timothy Spall

Jamie Cambell Bower

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Alice in Wonderland – 5 HP cast members

Helena Bonham Carter

Alan Rickman

Timothy Spall

Frances de la Tour

Paul Whitehouse

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Alice in Through the Looking Glass – 5 HP cast members

Helena Bonham Carter

Alan Rickman

Timothy Spall

Rhys Ifans

Paul Whitehouse

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Tinker, Tailor, Soldier, Spy – 5 HP cast members

Gary Oldman

John Hurt

Toby Jones

Ciarán Hinds

Roger Lloyd Pack

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The Hitchhiker’s Guide to the Galaxy – 5 HP cast members

Warwick Davis

Alan Rickman

Richard Griffiths

Kelly MacDonald

Bill Nighy

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Gosford Park – 5 HP cast members

Maggie Smith

Michael Gambon

Kelly MacDonald

Geraldine Somerville 

Sophie Thompson

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Sense and Sensibility – 6 HP cast members

Emma Thompson

Alan Rickman

Gemma Jones

Robert Hardy

Elizabeth Spriggs

Imelda Staunton