I would take legal advice. If it is the case that this person has made false allegations in the past, there will be a record, but you will need to seek disclosure. Although a defence case statement is not required in Mags Courts, I would suggest one be done in order to trigger the second level of disclosure that the CPS are obliged to do. You will then need to make a bad character application if you are successful in discovering that such false statements exist.
Unfortunately, the duty solicitor will not be available to you since s5 is non imprisonable, so your only hope is to pay for a solicitor to advise.
There will probably be a couple of hearings before the trial is set. At trial, the Pros will open the case and then call his evidence. After each witness has given evidence in chief, you can then cross examine. Once the prosecution have completed their case, then it is your turn to give evidence (and be cross examined). YOu can also call your own witnesses.