I love slow horses because it mixes humour with action and suspense very effectively. Unfortunately, this episode suffers from some very illogical scripting (something that has crept in several times over this season), the behaviour and dialogue of the characters just wasn't coherent with the scenes. Given the very dangerous events that unfold in this episode, it was totally unrealistic that there wasn't a shred of panic or urgency among the horses. Instead, amidst a claustrophobic and life-threatening firefight, the characters continue to crack wise and play up to their presumed incompetencies. It made what could have been an engrossing and gritty episode completely trivial. Maybe this was supposed to be a Christmas special that the grandkids would enjoy. Hopefully the scripting is saved in future episodes. On the plus side, the scripting for Duffy's character was spot on.