Joining the British Army?

What kind of questions do they ask you at Army interview? If my doc told me I'm a sociopath ( antisocial pd ) will that stop me from joining even though he hasn't logged it or anything? I heard there people with schizophrenia who have served aslong as they have passed the pshychological test to get in is this true? Maybe the Commando's would prefer someone like that? What kind of things do they aks though???