The way to distinguish a barrister from a solicitor would be to look out for them in court; they'll be wearing a wig and a gown.
Barristers work at a higher level of the court than the solicitor, they will act as advocate in hearings, pleading the case for their clients before the judge.
Barristers won't come into as much contact with the public as a solicitor would, instead, they would liaise with the solicitor to review the evidence and be given a certain amount of time to do so in preparation for what is going to be said in court.