They effectively revived a tradition associated with Doctor Who. During — and slightly beyond — the original run of Doctor Who, Target Books and a few other companies offered a regular stream of adaptations of past Doctor Who stories.
The complete first season of The Sarah Jane Adventures has been novelised, along with the first two stories of series 2. To date, only a single series 3 story, featuring the Tenth Doctor, has been adapted. Two series 4 novelisations were given a publication date of 4 November 2010 and cover art was released. However, it was revealed in September 2010 that these books would instead only be offered as e-books, though their publication date would be unaffected by the change of medium.
Next to the Penguin Character Novelisations, there were four photo novelisations of The Sarah Jane Adventures, which were published Pearson.