Series 1:
4* touched on serious topics in a well written, at times subtle and understated way, but balanced and non-preachy. Really good. Really interesting characters.
Series 2:
3* (just). Stepped away from serious issues and started to become a drama about University students
Series 3:
2* The Moses storyline was a token gesture at a notable story. Starting to descend into banality and nonsense.
Series 4:
1* only watched two episodes. I hate muscials