"The duty of a defendant who has been granted bail by the magistrates' court is to surrender to the custody of the court at the required time and place.... From that moment the defendant's further detention lies solely within the discretion and power of the judge. Unless the judge grants bail the defendant will remain in custody pending and during his trial. This is a readily comprehensible system which causes no problems for the administration of justice."
"(1) The Crown Court may grant bail to any person- (a) who is in custody of the Crown Court pending the disposal of his case by that court; and the time during which a person is released on bail under any provision of this subsection shall not count as part of any term of imprisonment or detention under his sentence."