Series 3 (SJA)

Series 3 of The Sarah Jane Adventures ran between 15 October 2009 and 20 November 2009. It starred Elizabeth Sladen as Sarah Jane Smith, Tommy Knight as Luke Smith, Daniel Anthony as Clyde Langer, Anjli Mohindra as Rani Chandra, Alexander Armstrong as Mr Smith and John Leeson as K9 Mark IV.

Overview
It consisted of six stories and twelve episodes. In a change of broadcast format, two episodes aired each week, on Thursday and Friday, meaning the entire series aired over a six-week period, with a complete storyline told each week.

A slight change to the opening was made: Before the title sequence, Clyde would narrate the basic premise of the series over a montage of scenes.

Among notable appearances this series, K9 Mark IV appeared in six of the twelve episodes and David Tennant appeared as the Tenth Doctor in the two-part story The Wedding of Sarah Jane Smith which aired in late October. Thanks in part to Tennant's appearance, the series scored higher-than-average ratings for children's programming, and also consistently scored high Appreciation Index ratings from viewers.

A trailer was made advertising the series.

Cast

 * Sarah Jane Smith - Elisabeth Sladen
 * Luke Smith - Tommy Knight
 * Clyde Langer - Daniel Anthony
 * Rani Chandra - Anjli Mohindra, Souad Faress
 * Mr Smith - Alexander Armstrong (voice)
 * K9 - John Leeson (voice)

Recurring

 * Haresh Chandra - Ace Bhatti
 * Gita Chandra - Mina Anwar
 * Androvax - Mark Goldthorp
 * Professor Celeste Rivers - Floella Benjamin
 * The Tenth Doctor - David Tennant
 * The Trickster - Paul Marc Davies

Guest

 * Peter Dalton - Nigel Havers
 * Harry - Brian Miller
 * Adam Lloyd - Gregg Sulkin
 * Samuel Lloyd - Toby Parkes
 * Eve - Eleanor Tomlinson
 * Registrar - Zienia Merton
 * Toby Silverman - Adam Gillen
 * Erasmus Darkening - Donald Sumpter
 * Mona Lisa - Suranne Jones
 * Lionel Harding - Jeff Rawle
 * Phyllis Trupp - Liza Sadovy
 * Tree Blathereen - Miriam Margolyes
 * Leef Blathereen - Simon Callow

Aliens and enemies

 * Judoon
 * Captain Tybo
 * Androvax
 * Nanoforms
 * Eve
 * Adam
 * Ship
 * Travast Polong
 * The Trickster
 * Erasmus Darkening
 * Mona Lisa
 * Highwayman
 * The Abomination
 * Slitheen family
 * Blathereen family

Audiobooks

 * The Shadow People
 * The White Wolf

Novels
The only story of this series to be directly novelised was The Wedding of Sarah Jane Smith. Additionally, Prisoner of the Judoon was adapted as The Sarah Jane Adventures: Judoon Afternoon, The Eternity Trap was adapted as The Sarah Jane Adventures: The Haunted House, Mona Lisa's Revenge was adapted as The Sarah Jane Adventures: Painting Peril and The Gift was adapted as The Sarah Jane Adventures: Blathereen Dream.

Home video releases
The Complete Third Series boxset was released on BBC DVD on 1 November 2010.