The fictitious "Libertines Club" to which James Whitehouse belonged whilst an Oxford student was based on the real Oxford "Bullingdon Club," a drinking and dining club originally founded at Oxford as a hunting and cricket club in 1780.
Phoebe Nicholls plays Sienna Miller's mother-in-law, Tuppence Whitehouse, in the series. In real life, Phoebe is the mother of Tom Sturridge, who was once engaged to Sienna Miller & who is father of Sienna Miller's daughter, Marlowe.
Based on the 2018 book Anatomy of a Scandal by Sarah Vaughan
Jonathan Coy who plays a judge and Michelle Dockery who plays a lawyer were both in Downton Abbey. Dockery played main character Lady Mary Crawley and Coy played the Crawley family's lawyer in several episodes.
Rupert Friend's character James Whitehouse was in the fictitious Oxford "Libertines Club." Friend's feature debut was 2004's "The Libertine."