I am not talking about giving evidence to the police. In the alleged offences I mentioned it is necessary for the arrested person to explain his innocent to the "Court". The police only act on what they see or information they obtain. This is why many years ago people would carry a small coin, like a farthing, in their shoe, so if a constable said they were a vagrant, i.e. ;having no visible means of support' they could prevent the constable from arresting them by showing the farthing.
It brings me back to one of the troubling things about this case. The police acted without any complaint from the alleged victim. (Please let's all be clear - I use the words'alleged' victim because in law if there is no perpetrator there cannot be any victim.
In a criminal case it is totally unnecessary for the defendant to prove anything, it is for the prosecution to prove he/she committed the act of which he/she is accused.
There has been at least one case where after being arrested the defendant never spoke one word to anyone including the police, and at trial he was acquitted.
If you research cases I think you (and for the benefit of Lardy, in common parlance 'You' means 'One') will find that most convictions stand in some part due to the answers that the accused gave, or statement they have made.