A family doctor from Wiltshire who used a secret camera inside his James Bond-style wristwatch to record himself abusing female patients is facing jail after admitting a string of sex charges.

Dr Davinderjit Bains, 45, used his position as a GP at a medical practice in Royal Wootton Bassett, near Swindon, to assault more than two dozen women.

Bains filmed the attacks on his Tieex 4GB Waterproof HD Spy Watch DVR, which has been likened to something out of a 007 film.

It has a built-in camera on the face - with simple on and off buttons to record - and can be bought on the internet for less than £60.

Detectives branded Bains a "sexual predator" and said he had covertly filmed more than 100 women.

At Swindon Crown Court Bains admitted a total of 39 charges - 13 charges of assault by penetration, 13 charges of voyeurism, 11 charges of sexual assault and two charges of sexual activity with a child.

He also asked for a further 65 offences - 10 of sexual assault by penetration, eight of sexual assault and 47 of voyeurism - to be taken into account when the judge passes sentence.

His not-guilty pleas to three charges of sexual assault and a single count of administering a noxious drug with intent to commit a sexual offence were accepted by the Crown and will lie on file.

Bains, of Nyland Road, Swindon, was remanded into custody to await sentencing once reports have been prepared.

The offences were committed against 30 women - aged from 14 to 51 - between July 2010 and May 2012.

The police investigation began in June last year when a 19-year-old woman told officers she thought Bains had filmed her as she showered and said she had been sexually assaulted by him in Swindon.

When detectives arrested Bains at the Tinkers Lane Surgery in Royal Wootton Bassett, they discovered his high-tech wristwatch with spy camera.

They later recovered 361 high-quality video clips from Bains' watch and home computer.

Detective inspector Mark Garrett, who led the investigation, said Bains had used his position as a GP to abuse women.

"They put their trust in their doctor and Dr Bains breached that trust massively - compromising his professional position - and breached that trust to the highest order," he said.

"Today he stands exposed as someone who has utterly betrayed that trust for his own sexual gratification.

"He is a sexual predator, simple as that. And he was allowed to abuse his position of trust and offend for two years.

"In almost 30 years of police service I have never come across a case like that of Dr Davinderjit Bains."

Bains qualified as a doctor from Mangalore University in 1993 and became a GP in 2007. He is currently suspended from practising by the GMC.

In a statement the surgery said it was "appalled" at the crimes Dr Bains had committed.

"This has been a shocking and distressing case for all concerned," the statement said.

"The partners, GPs and staff of Tinkers Lane Surgery are deeply saddened by the actions of this former colleague and our sympathies remain entirely with the victims and our patients and their families.

"We are appalled that the sort of crimes to which Dr Bains has today pleaded guilty could happen in general practice.

"We will now seek to rebuild the trust and the confidence of our community and our patients."

When Bains was first arrested a helpline was set up by NHS Wiltshire, the local primary care trust, for patients at the surgery.

It said in a statement: "We are appalled at the crimes to which Dr Bains has today pleaded guilty.

"It is clear that he violated the trust and dignity of those who looked to him for professional care and support.

"Such cynical abuse of his position, and way he concealed these serious offences, is reprehensible."