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Thanks so much for the input. Much appreciated, really helping me with my essay.
Can I throw one last scenario in, regarding confessions as evidence. This now only relates to A v B
During the investigation of Person A's assault on Person B, a therapist/professional, who here's about assault, discloses to the police that Person A has received anger management for his temper and during sessions Person A talked about not being able to control his anger and on one occasion Person A almost assaulted Person C during an argument.
What would need to happen next?
a) the therapists evidence can be admissible as bad character evidence in A v B
b) Person C would need to be traced and a separate investigation launched. The therapists evidence would not be admissible as evidence in A v B as it may have an adverse effect on the trial as we don't know what has fully happened regarding Person C
c) the therapists evidence can be used to try and prove propensity and Person C is still traced.
In all the scenarios I've mentioned, would Person B be made aware of any of the other evidence streams against Person A.