On 19 February, Rupert took part in a ‘table read’ for Sky Drama of Unicorn, a sitcom script written by Ria Lina and directed by Chloe Thomas. … Judging by the photo, it looks like my kind of thing!
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On 16 November, Rupert did a ‘rehearsed reading’ of The Norwegians, a comedy by C. Denby Swanson, with London-based theatre company Go People.
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I managed to ask Rupert about it when I saw him after Carols in the City, and he said the reading had been a one-off thing – a trial, as it were – which may or may not come to anything.
I also asked Go People for more info, and they kindly replied to say:
This wasn’t a public performance, but rather a reading for industry professionals interested in developing the play further.
Glad to hear you’re as much of a fan of Rupert as we are!
Let’s keep our fingers crossed for a full production, as it seems like fun!

Rupert appeared in Uncle Bobby’s Croft as part of the Edinburgh Fringe Festival in 2008. I don’t have any other information about this production, or what character Rupert played in it. However, a kind commenter told me that this was written by Rupert’s brother Justin Young.
If anyone has any further details, I’d love to hear more!