Starts with a bang, ends with a whimper.
Betaal's storyline is heavily inspired by 2008's low-budget, Nazi-zombie horror flick "Outpost". Romero's "Night of the living dead" elements are also thrown in with abandon. The house seige scene and all that.
After the first episode, the pace slows and by the time you reach the 4th episode, the show is dragging. The show also lacks twists, the one that does come in the finale fails to set things ablaze.
The British zombies lack good make-up, they don't look scary. Don't expect "The Walking Dead" types.
All in all, an average affair.