This is a quote from the CPS website...
There must be some form of evidence adduced to prove that there was an actual pursuit of a wild mammal. This may be obtained and supported by eye-witness accounts of the activity, video evidence or evidence of preparatory activity such as earth stopping; that is the practice of blocking fox, rabbit, badger holes to prevent a fox going to ground
So by what it says in the quote, for a conviction there has to be eye witnesses or video evidence....
I think this is a summary only offence (section 1), so you would look silly asking for it to be