Part of the storyline revolves around this case taking place on or around a bank holiday. CCTV footage shows a date stamp of 2024/01/21, or 21st January 2024. There isn't a bank holiday scheduled for that date, the next after New Year not being until March.
When DC Connor updates his colleagues about a character in hospital, he calls it "Chelsea and Westminster" which is the real-world name of Chelsea and Westminster Hospital. In the following establishing shot the of the real CWH the hospital's signage (digitally altered?) reads as the fictitious "Chelsea Central Hospital", as it has in previous episodes.