I thought it was a really shitty series that added nothing new to the zombie genre. Like with many movies the idea was better than its execution.

Allllllll righty then. Moving right along.

Scrolling through the cast list and I came across this:
https://www.imdb.com/name/nm1535104/

I think I'll watch it.

OK, ummmm... well, I still hope you watch it, but although she would be an excellent reason to do so, you shouldn't expect to see her too much. She is not one of the main characters.

She must play one of the zombies. Actually, it looks like she was on the real, actual British TV show Big Brother, so, that would make sense... in Dead Set, they do show some Big Brother cast members from the few years before they filmed Dead Set. Toward the beginning, you see some of them gathered together and socializing, and then of course they get overrun by the undead and then later come back as undead versions of themselves.