A celebrity osteopath who has pleaded guilty to three counts of voyeurism is under further police investigation after the discovery of more recording devices, a court has heard.

Torben Hersborg, 63, who has boasted celebrity clients including Caroline Wozniacki and Anna Friel, appeared at Highbury Corner Magistrates’ Court on Thursday where he was due to be sentenced for three charges of observing a person doing a private act ‘for the purpose of obtaining sexual gratification’.

Hersborg previously pleaded guilty to spying on female university students on December 10, 14 and 21 last year, the court was told.

But Thursday’s hearing was adjourned after it was revealed that police were yet to examine a number of recording devices that were seized on his arrest.

The court heard that Hersborg had agreed to assist officers with their investigations, and he is due to appear at the same court on January 30.

He has been remanded in custody.