My friend's husband, a retired police officer who spent his entire working life with EP. and was one of those present, said from the off, that he was guilty. One cancels out the other.
Hardly. Anyone that closely involved couldn't be expected to reveal anything useful to the defence.
By the way, I've seen the opening episode of the ITV drama, and noticed that while some things were reasonably accurate on detail, others, such as the control room at Chelmsford police station and the exterior and surrounds of WHF, were grossly inaccurate. Only two policemen seemed to have turned up at WHF initially, with no third officer remaining in the patrol car.