The prosecution is today expected to open its case against broadcaster Stuart Hall who faces a string of historical sex allegations.
Hall, 84, is said to have raped and indecently assaulted two young girls on various dates more than 30 years ago.
He is charged with seven counts of rape against one complainant between 1976 and 1978. Five of the rapes are said to have taken place when she was under the age of 16.
Hall is also accused of two counts of indecent assault against her within the same period.
In addition, he is charged with eight counts of rape and three indecent assaults against a second alleged victim between 1976 and 1981.
One of those alleged rapes is said to have taken place when the complainant was aged under 13.
Last year, Hall, from Wilmslow, Cheshire, pleaded guilty to 14 offences of indecent assault against 13 girls or young women at the same court and was jailed for 15 months. The sentence was subsequently increased to 30 months at the Court of Appeal.
Addressing the jury of eight women and four men yesterday at Preston Crown Court, Mr Justice Turner warned them against conducting any research on the case on the internet or elsewhere.
He added: "Put out of your mind anything you may have read, or do read, or may have heard or seen in this case in relation to this defendant.
"You must approach the basis of your task on the evidence you are presented with during the course of this trial and nothing else.
"Approach this case entirely dispassionately, without any sympathy for one side or the other."
The former It's A Knockout presenter has pleaded not guilty to all 20 allegations.
He earlier pleaded guilty to one count of indecent assault between 1978 and 1979 against a girl aged under 16.
Hall has been a familiar face and voice in British broadcasting for half a century, and his eccentric and erudite football match summaries made him a cult figure on BBC Radio 5 Live.
The trial is estimated to last seven days.