Clifford is famed for representing celebrities including Simon Cowell, Jade Goody, former prostitute Pamela Bordes and comedian Freddie Starr.
He was first arrested in December 2012 as part of the Operation Yewtree inquiry. He was charged last April.
The 70-year-old Clifford denies the charges, which span from 1966 to 1984, from seven complainants aged from 14 to 19.
Opening the prosecution case this morning, Rosina Cottage QC said Clifford knew how to "manipulate, lie and get what he wants".
She told the court: "The defendant used his contact with famous people to bully and manipulate these young people into sexual acts with him."
She spent the morning outlining the details of Clifford’s alleged offences to the jury.
The trial is expected to last six weeks.