A team of Sutton detectives has been officially commended for helping to jail a doctor caught secretly filming his patients.

Detective Inspector Sarah Rees, Detective Sergeant Andrew Wickens and Detective Constable Aaron Moon were awarded Metropolitan Police assistant commissioner's commendations.

From May: NHS ban for Peeping Tom doctor - caught after accidentally filming himself

The trio was praised for their investigation into Dr Lam Hoe Yeoh, who was jailed for five years and placed on the lifetime sex offender register in November 2014 after being convicted of voyeuristic crimes "on a scale never previously encountered by the Met Police."

The investigation was sparked in April 2014 after a tiny digital camera was found in a hospital toilet in Sutton.

When detectives watched back the footage on the camera, they found that Dr Yeoh had accidentally filmed himself hiding it in the toilet.

After he was arrested, police discovered reams of secret footage of both adults and children, filmed by Dr Yeoh in consultation rooms, trains and toilets up and down the country.

Detectives estimated the sheer length of footage discovered would have taken a total of three years to watch.

The Sutton team was praised for taking on such a complex case with limited resources, after they were forced to comb through Dr Yeoh's tax records to piece together his work history and track down his victims.

Chief Superintendent David Snelling, Sutton borough commander, said: "They demonstrated outstanding detective ability, delivering exceptional victim care and outstanding results."

Dr Yeoh pleaded guilty to 30 offences of voyeurism, six offences of making indecent images of children and one blanket charge covering 1,084 victims.

Recorder Warwick McKinnon said: "The breach of trust is vast and far reaching. You have undermined patients' trust in doctors and the establishments where you have worked.

"This was manipulative and predatory behaviour of a prolific nature and on a scale never previously encountered by the Met Police."