" On your own evidence by this stage you weren’t even trying to slow or stop. You expected her to get out of your way. Thus I make it clear that it was not merely the absence of a front brake but your whole manner of riding that caused this accident. "
Here is the full judgement which explains the case and the sentence:
https://www.judiciary.gov.uk/wp-content/uploads/2017/09/sentencing-remarks-hhj-wendy-joseph-qc-r-v-alliston.pdf