I like this series but if I could give this episode 0 I would do. Hopefully they'll stop doing this in future series. The documentary style episodes are rubbish and almost unwatchable. I don't know what the writers are trying to achieve but whatever it is they don't manage it and you would have thought if any one involved with the series watched it back they would realise that all of these ones they've made have been rubbish but either they don't watch them or, more likely, they're cheaper to make so if they put them in it helps reduce the costs. Also sure they would allow a documentary team follow undercover operations.