Former BBC presenter Mr Travis, 68, was cleared of 12 counts of indecent assault last month but jurors at London's Southwark Crown Court were unable to reach verdicts on two other charges.
Prosecutor Miranda Moore QC told the court yesterday that Mr Travis is to be charged with a further count of indecent assault.
As he left the court, Mr Travis told reporters that when he last appeared before them he said the case had "been a bit of a nightmare" for him. He added: "The nightmare is continuing".
Accompanied by Marianne, his wife of more than 40 years, Mr Travis said he wanted to draw attention to the fact that yesterday was the 50th birthday of Radio Caroline - the offshore radio station where he started his career.
He went on: "I'd like to take the opportunity to wish all my colleagues in the radio and the music business a happy day, and spend some time remembering what it used to be like in the music business when it was actually quite enjoyable."
Ms Moore said the Crown Prosecution Service was seeking a retrial on the outstanding charges.
Wearing a long grey coat and red scarf, Mr Travis was allowed to sit outside the dock during the hearing.
The former Top Of The Pops presenter was prev-iously accused of indecently assaulting 10 women and sexually assaulting another in alleged incidents dating back to 1976, at the height of his fame.
The jury of eight women and four men deliberated for more than 20 hours before finding him not guilty of 12 indecent assault charges.
But they were unable to agree on a charge of alleged indecent assault against a woman in the 1990s, and an alleged 2008 sexual assault.