www.sentencingcouncil.org.uk
The prosecutor's are working towards trying to prove a charge that fits into the highest possible category in the sentencing guidelines. They're categorised from A-C for culpability and 1-3 for harm.
It seems from the focus on him getting revenge for what the alleged victim had said earlier, and also his claim that he suffered psychological and physical injuries, that the prosecution are pushing for what would be categorised as B - medium culpability and category 3 for harm.
Sentencing is further determined by previous convictions, he has one for drink driving but it doesn't have relevance on this charge so wouldn't be taken into consideration.
Sentencing can be custodial, community orders and fines dependant on category. For B3, the starting point is a high level community order and a fine.
Looking at the above and the case so far, I think it's weak at best, likely to be C3 with starting point of medium level community order
Edit - if found guilty in the first place, which I don't think he will be