I am currently a support worker in this field. I would definately say read the new valuing people! I would also say that the questions will depend on:
where you will supporting service users i.e. in supported living/ in the community etc Think about the situations and difficulties of working in these environments,for example working with someone who has challenging behaviour in the community.
What types of individuals you will be supporting, i.e. PMLD, complex health/life limiting conditions, challenging behaviour. Everyone has different needs, read up on person centred planning.
What type of service it is? NHS or private? They may have different policies, procedures etc.
In my interview I got asked:
-What brought me to the interview, and what experiences I have with LD
-What is confidentiality and when is it acceptable to break it?
-What privacy and dignity is and how you would promote this in the work place?
-What is autism? (I was employed specifically to work in an autism service)
-What would I do if I went to administer medication to a service user and the service user next to them took it by accident?
-What forms I would fill in? i.e. medication error, incident forms.
-I also got asked lots of scenario questions and what I would do if 'x' happened?
This is all I can think of from the top of my head, please feel free to PM me