Just a quick update for those kind ladies to offered me advise. SIL's DS is still not talking (turned 2 in April) or really socialising with anyone and seems very happy to watch tv by himself. He is now though in childcare 1 day a week (which they were hoping would help with his speech).

Anyway, it obviously hasn't worked and someone at the child care centre has actually spoken to my SIL about her DS's delays. From what I understand they mentioned autism, or perhaps a hearing problem, which he is going to be tested for (the hearing problem that is). Hoping it's the lesser or the 2.