Potter Who

POTTER WHO

Actors who have appeared (or voiced characters) in both Doctor Who [DW]
and the Harry Potter movies [HP]:

John Atterbury
DW - White Robot (The Mind Robber) / Alien Guard (The War Games.)
HP - Phineas Nigellus Black

Terence Bayler
DW - Yendom (The Ark)
HP - the Bloody Baron

David Bradley
DW - Solomon (Dinosaurs on a Spaceship)
HP - Argus Filch

Jim Broadbent
DW - Eeventh Doctor (The Curse of Fatal Death)
HP - Horace Slughorn

John Cleese
DW - art gallery visitor (City of Death)
HP - Nearly Headless Nick

Warwick Davis
DW - Porridge a.k.a. Emperor Ludens Nimrod Kendrick Cord Longstaff XLI (Nightmare in Silver)
HP - Filius Flitwick / Griphook / Head Goblin, Gringotts Wizarding Bank

Derek Deadman
DW - Sontaran Commander Stor (The Invasion of Time)
HP - Tom, landlord of The Leaky Cauldron

Simon Fisher-Becker
DW - Dorium Maldovar (The Pandorica Opens /A Good Man Goes to War/Wedding of River Song)
HP - Fat Friar, Ghost of Hufflepuff

Michael Gambon
DW - Kazran Sardick /Elliot Sardick (A Christmas Carol)
HP - Albus Dumbledore

Jimmy Gardner
DW - Idmon (Underworld)
HP - Ernie Prang, the driver of the Knight Bus

Julian Glover
DW - Richard the Lionheart (The Crusade) / Scaroth (City of Death)
HP - voice, Aragog

Shirley Henderson
DW - Ursula Blake (Love & Monsters)
HP - Moaning Myrtle

John Hurt

DW - 'the Promise-breaker'
HP - Mr. Ollivander

Jessica Hynes
DW - Joan Redfern (Human Nature/The Family of Blood) / Verity Newman (The End of Time)
HP - voice, Mafalda Hopkirk

Toby Jones
DW - the Dream Lord (Amy’s Choice)
HP - Dobby the House Elf

Roger Lloyd Pack
DW - John Lumic, creator of the Cybermen (Rise of the Cybermen / The Age of Steel)
HP - Barty Crouch Sr.

Miriam Margolyes

DW - Frau Tod (audio story: The Beast of Orlok)
HP - Pomona Sprout

Helen McCrory
DW - Rosanna Calvierri (The Vampires of Venice)
HP - Narcissa Malfoy

Bill Nighy
DW - Van Gogh Expert (Vincent and the Doctor)
HP - Rufus Scrimgeour

Jeff Rawle
DW - Plantagenet (Frontios.)
HP - Amos Diggory

Adrian Rawlins
DW - Dr Ryder - leader of the Ood rebellion (Planet of the Ood)
HP - James Potter

Elizabeth Spriggs
DW- Tabby (Paradise Towers)
HP - The Fat Lady

Imelda Staunton
DW - voice of the Interface (The Girl Who Waited)

HP - Dolores Umbridge

David Tennant
DW - Tenth Doctor
[Also: Galanar, Daft Jamie, Feldwebel Kurz, Colonel Ross Brimmicombe-Wood (Doctor Who audio stories) before he became the Tenth]
HP - Barty Crouch Jr.

Zoe Wanamaker
DW- Lady Cassandra (The End of the World / New Earth)
HP - Rolanda Hooch

Mark Williams

DW - Brian Williams. Also Maxwell Edison (audio story: The Eternal Summer)

HP - Arthur Weasley