Katy Manning is of course the actress behind Jo Grant, companion of the Third Doctor and all-round good sort who left the Doctor in The Green Death to travel to the Amazon with Professor Cliff Jones, how she presumably later married. It was 1973 when she left the TARDIS, and short of a couple of Big Finish productions she has had little to do with Doctor Who since then.
According to Cook:
â€œOn the set of The Sarah Jane Adventures. Matt Smith is here. So is Lis Sladen. So is Katy Manning. And cool stuff. It is good. That is all.â€
Written by Russell T Davies – playing with someone else’s toy for a change – the two-part adventure has started filming and will feature Matt Smith’s first appearance as the Doctor outside of the show. It will also be the second time in consecutive series that the Doctor has encountered Sarah Jane Smith.