When films open with establishing shots of a city, it’s normally to evoke a sense of place for a story that will, presumably, mostly take place there. When a horror opens this way, it can also be a way of setting up locations for third-act set-pieces.
Zoo, written, directed, edited and scored by Antonio Tublen, disobeys this. It establishes that London is the broad setting for its zombie outbreak story, but the actual film takes place almost entirely within the confines of one couple’s flat. And when it doesn’t, the shots are relegated to the immediate surroundings of their home – e.g. wreckage just across the street or fleeting glimpses of their floor’s corridor. It’s almost as though its characters are confined like animals in a… well, you get the idea…