All five series will find their streaming home on BritBox in August.
The Sarah Jane Adventures, which was aimed at a younger audience that sci-fi phenomenon Doctor Who, also starred the likes of Anjli Mohindra, Tommy Knight, Daniel Anthony and Alexander Armstrong.
The BBC announced it would not return for a six series following the sudden death of Sladen in 2011.
Fans were delighted with the news that they will finally be able to revisit The Sarah Jane Adventures on demand, with several sharing their enthusiasm in the comments, responding to BritBox's announcement.
"It's like they read my mind, been wanting to re-watch SJA for ages, love that fantastic show," one tweeted, while another added: "SJA! Amazing! I have so much other stuff to watch though, when will I fit it in?"
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As well as adding The Sarah Jane Adventures to its roster, BritBox has also confirmed Primeval series one and two and Being Human series one to five will also be streaming in August.
Upstart Crow and This Is England '86 are further new additions.
Tinker Tailor Solider Spy, The Imitation Game and The Third Man are added to the Film Legends Collection.
A BritBox subscription costs £5.99 per month. You can sign up for a 7-day free BritBox trial here.
If you're looking for more to watch, check out our TV Guide. Visit our Sci-Fi and Fantasy hubs for all the latest news.
