TerryBK

Project Greenlight might fit the bill.
I've only watched the first season as I'm not sure if the other seasons aired in the UK.
https://en.wikipedia.org/wiki/Project_Greenlight
To be honest, I'm not sure the first one did either and I may have watched it via a "non-traditional" method 🙂 
Its based on a competition element but once that is out of the way after the opening episode or two and they've picked the winning script it then follows the whole process through to the film being released.

So to follow up on that whooping 35 minute short film from Sigma, I just found that they'd released a Behind-the-Scenes video highlighting the crew's experience using the FP for the project and what their thoughts on it were!
 
Gotta say, if Sigma continue to listen to the feedback they're getting on this camera and keep that in mind moving forward, I cannot wait to see what Sigma's followup camera to the FP will be like. They've got a monster of a camera on their hands, just iron out some quirks here and there and the next model will be insane.

Man, this new firmware update is MASSIVE. Definitely breaths a ton of new life into the FP and fixes a few of the issues that Caleb mentioned in his video! 
However, I feel it's worth noting that Sigma confirmed in a new interview with one of the sites that can't be linked here that they were ultimately unable to create a proper LOG/flat profile for the FP due to technical limitations... So apparently that's not coming any time soon for the camera. Not the end of the world, as I'd wager most filmmakers buying this camera are investing in it for the various RAW codecs it can provide internally and externally. Hopefully though the next model in the FP lineup fixes that issue and provides a LOG profile at launch. 
In cheerier news though, Sigma just released a whopping 35 minute long narrative short film shot entirely on the FP! Unsurprisingly, it looks pretty great.
 
 

Huge update for the Sigma FP, allowing a total of three RAW flavors, and a lot of other thinhs. Here the list of enhancements : 
https://www.sigma-global.com/en/download/cameras/firmware/