The news ticker reads 'Architect arrested on multiple murder charges', which is about Mia Nolan from Crocodile (2017).
Briefly in the background while Rachel and Jack are talking, there is a commercial (or possibly a news article) on the TV that mentions the Willow Grain implant. This device is the central theme in The Entire History of You (2011).
One of the songs Ashley sings is 'Anyone Who Knows What Love Is' by Irma Thomas, a reoccurring song in the show.
At the production meeting, there's a framed cover of Ashley on the front of 'Sugar Ape' magazine. Sugar Ape was a magazine featured in Nathan Barley (2005), another one of Charlie Brooker's creations.