I love this tv show and i want to watch more of it. I was wondering because in wikipedia and in youtube it says nothing past series 3 and it stops at series 3 and there is no series 4 at all. But the other day when i was looking in wikipedia and in the episodes it says about series 4,5 and even 6 and the outline of each episodes! But then the next day i looked at it there is no trace of series 4, 5, or 6. it only says series 1-3!. So please help me find series 4 and more and see if it is still on air on BBC. btw in australia you cant view bbc. so please help me view it and inform me and wat series it is? please help me find and watch it!