Operation Yewtree detectives have arrested a 69-year-old man from Milton Keynes on suspicion of sex offences.
The alleged offender was taken into custody at the city police station yesterday, officers confirmed.
He was quickly bailed to return on a date in August pending further enquiries.
Operation Yewtree was launched in the wake of predatory paedophile Jimmy Savile’s death.
The ex-BBC personality abused hundreds of people, mainly targeting children, throughout his career. His abuse was not discovered until the year after his death, which prompted the case.
Metropolitan Police say the arrested man falls under the strand of the investigation termed ‘others’.
The other two parts of the investigation are defined as ‘Savile’ and ‘Savile plus others’.
This is the 18th suspect to be questioned in relation to the operation, which was launched in October 2012 in the wake of the scandal.
The investigation has led to the conviction and imprisonment of entertainer Rolf Harris, PR guru Max Clifford and former pop star Gary Glitter.
Ex-DJ Dave Lee Travis, who lived in a Buckinghamshire village prior to the trial, was convicted for indecently assaulting a TV researcher in 1995. He was sentenced to three months’ jail, suspended for two years.