This was portentously long and teeth grindingly slow. This is to signify that it wants to be taken VERY seriously and to do so, make you SERIOUSLY suffer. It forced me to watch bits and pieces of Jeremy Paxman just to get to the end, which should define for you what boredom really means.
Apparently the guy who wrote it couldn't find any bomber types to research his story. So he decided to "draw on his own experiences." Must have been his experiences waiting at the bus stop. That is, back in the days before Channel 4 sent a limo to pick him up.
Suffice to say, the best way to cast light on a serious issue in British society is to come up with the most corny Hollywood plot contrivance. Reverse the obvious gender roles (Gosh, how ironic, how cutting edge) and have two members of the same family but on opposite sides end up chasing each other's tails. Brilliant!
No idea what the ending was meant to signify. The ambivalence of the Muslim in British society today? I've no idea. Trouble is, neither did the writer/director if he had been honest with himself in the first place.
I don't know what's more frightening. Islamic terrorism or the money wasted on this project.