Someone said :
I never watched it when it was on Sky all those years and only started it on Netflix after finishing the wonderful Orange is the New Black (same creator). It's quite similar in tone to Orange; about a middle-class white woman who, following the death of her husband, turns to selling weed to support her family. It's actually nicely dark in moments but always consistently funny.
The first three seasons are on Netflix UK while the whole 8 is on Netflix US (get Mediahint!)
Finished this last night. The couple of middle seasons were a bit hit and miss at times, particularly 5. It picked up again in Season 6 which had some of my favourite episodes. The final season had some great moments and lots of shout-outs to previous storylines.
Here's the trailer for Season 1.
Ignore the dated style of the trailer. The show comes right up to date by the end.