As fun as it would be to see the Shakespearean poet Thomas Thorne (Mathew Baynton) or WWII Captain (Ben Willbond) interact with the American ghosts, there are actually a ton of reasons why the crossover just wouldn’t work that well overall. First off, there are just way too many similarities between the two showsfor the characters to not feel extremely redundant. Lady Button’s refined and haughty ways are super close to Hetty Woodstone (Rebecca Wisocky) and Pat Butcher (Jim Howick) was obviously the inspiration for Pete Martino (Richie Moriarty), down to the arrow through the neck as the cause of death. Likewise, Alison and Mike don’t have distinguishing characteristics that make them all that different from Sam and Jay — the woman is the one who can see the ghosts, they’re both a couple who are trying to make their business succeed, and there are plenty of silly mishaps because of the ghosts’ presence at their respective estates.
The most glaringly obvious reason a crossover would never work is that the ghost lore that’s already been established prevents the ghosts from showing up in a different location. Except for Pete’s ghost power,the majority of the ghosts are tied to the site where they died. There’s not really any conceivable way that, all of a sudden, ghosts from the UK (who have previously been stuck at Alison and Mike’s home) could gain the ability to travel thousands of miles to pop up at the only other bed and breakfast that also houses a woman who can see spirits. It would be way too much of a coincidence, and it doesn’t fit with what’s already been the foundation of how the ghosts operate. Plus, the UK series ends with a flash-forward to Alison and Mike as much older versions of themselves who have headed back to Button House, so Alison can visit with her old spirit friends. It doesn’t really make sense for the two humans to travel to Woodstone in any timeline, since we already know what their story looks like in the future.
