I haven't seen this for a while, but I posted a typing thread on EIDB when I was around half way through the series. Then a few days ago my mate was watching 4oD, and I realised there wasn't one on here.
Tony: SLE (of the 3w2 (although 7w8 is possible) variety); Fi PoLR is evident
Sid: I'm seeing Si leading
Michelle: ESE (another 3w2)
Cassie: IEI (craves Se)
Chris: SEE (not as sociopathic as Tony; certainly doesn't have Fi PoLR; however, his sense of adventure is evident)
Jal: ESI (fiercely defends her friends iff they're in the right, and I think someone who has a great understanding of bonds)
Maxxie: possibly some Fe or Se leading type. He was a bit 2D in the series
Anwar: I can see ILE, but this is purely behavioural
Effy: I just saw valued Fi in the episode where she talked
Abigail: EIE I could easily see. Distinctly Aristocratic and probably Fe leading. Although SLE wouldn't be out of place
Angie: IEI. I sense a lot of passivity there. Who better than an IEI?
Josh (Abigail's brother): LSI wouldn't look out of place