Travelling Companions

During their travels around the Universe the Doctor has had a travelling companion (sometimes more than one) to share the adventures with.
Susan Foreman
Carole Ann Ford
Barbara Wright
Jacqueline Hill
Ian Chesterton
William Russell (Russell Enoch)
Vicki
Maureen O'Brien
Steven Taylor
Peter Purves
Katarina
Adrienne Hill
Sara Kingdom
Jean Marsh
Dorothea 'Dodo' Chaplet
Jackie Lane
Polly Wright
Anneke Wills
Ben Jackson
Michael Craze
James 'Jamie' Robert McCrimmon
Frazer Hines
Victoria Waterfield
Deborah Watling
Brigadier Alistair Gordon Lethbridge-Stewart
Nicholas Courtney
Zoe Heriot
Wendy Padbury
Segeant Benton
John Levene
Doctor Elizabeth 'Liz' Shaw
Caroline John
Josephine 'Jo' Jones (nee Grant)
Katy Manning
Captain Mike Yates
Richard Franklin
Sarah Jane Smith
Elisabeth Sladen
Lieutenant Harry Sullivan
Ian Marter
Leela
Louise Jameson
K-9
John Leeson (voice)
Romanadvoratrelundar 'Romana'
Mary Tamm
Romanadvoratrelundar 'Romana' (1st regeneration)
Lalla Ward
Adric
Matthew Waterhouse
Nyssa
Sarah Sutton
Tegan Jovanka
Janet Fielding
Vizlor Turlough
Mark Strickson
Kamelion
Gerald Flood
Perpugilliam 'Peri' Brown
Nicola Bryant
Melanie 'Mel' Bush
Bonnie Langford
Ace
Sophie Aldred
Doctor Grace Holloway
Daphne Ashbrook
Rose Tyler
Billie Piper
Mickey Smith
Noel Clarke
Adam Mitchell
Bruno Langley
Captain Jack Harkness
John Barrowman
Donna Noble
Catherine Tate
Doctor Martha Jones
Freema Agyeman
Amelia 'Amy' Jessica Williams (nee Pond)
Karen Gillan
Rory Williams
Arthur Darvill
Clara Oswald
Jenna Coleman
Nardole
Matt Lucas
Bill Potts
Pearl Mackie
Graham O'Brien
Bradley Walsh
Ryan Sinclair
Tosin Cole
Yasmin 'Yaz' Khan
Madip Gill
Dan Lewis
John Bishop
Ruby Sunday
Millie Gibson
Belinda Chandra
Varada Sethu