The first series I didn’t like hugely. It felt it was trying too hard, didn’t hang together. But from there it just got better and better. The 4th series which was set in the WW1 trenches featured the best ending of any TV series / program / anything I have ever seen or will ever see. If you check around sites you would see that I am not alone. Very few things on tv or in film make me get close to crying but this is one. It’s impact here is all the less because it is 4 minutes from an entire series, indeed of 4 series so if you have not seen the whole thing and you get the chance – watch it. And if you have seen this, well, it’ll make you sad all over again.