Using a canal boat to navigate a zombie apocalypse is a great low budget idea for a series, and it is able to work in a lot of English-ness to it for a niche appeal of it goes abroad. There is also a lot of room left to grow in the series as the scope is very small for the most part in the first series.
Where the show falls down, at least in my opinion, is in the comedy writing and references. There is a point when they specifically criticise The Big Bang Theory, yet a lot of their references feel so on the nose that they could have come straight out of a horror version of the show (I was reminded of it even before it was brought up!). The jokes are just kind of lame and make you roll your eyes more than actually laugh out loud. It just lacks the nuisance of better comedies and with better writing the show would probably be much improved.
Overall it's a fun throwaway show that definitely has a niche appeal enough to give it a watch, it's just a shame it's humour is so broad.
