No. They would look at the evidence as a whole and make a decision on the basis of that. They (and the police) are bound by law to reveal all unused material to the Court and, unless the Court certify otherwise, to the defence. They would know that the defence would have to be made aware of the evidence undermining the prosecution case and of the Courts obligation to ensure a fair trial.Might they be inclined to go for the easy conviction?
Wherever evidence conflicts, further enquiries are made to try and strengthen / weaken one part and, invariably, one ends up significantly stronger than the other when all possible explanations for the conflict are investigated.
The hypotehetical situation is a load of bollocks basically - I cannot conceive of a situation in which evidence which proves innocence would be inadmissible and, if that evidence existed, that other, admissible evidence would prove guilt.
go away
that makes no sense at all