When the prosecution has finished presenting their case, the defence can make a “no case to answer” submission if they think that the prosecution has failed to prove every element of the charge and literally there is no case for them to answer.
For example, the police may have proved it was you, and not someone else driving the car. If the judge agrees that the prosecution hasn’t proven it’s case, the charge will be dismissed. If the judge decides that there is a case to answer, then the defence begins their case by making an opening statement followed by their witnesses.
At the end of a jury trial, the lawyers for each side will sum up their cases (“closing submissions”). The judge will sum up the evidence and advise the jury of the law it must apply in deciding whether the defendant is guilty or not guilty.