Sam Gould, 33, of Lodge Court in Hornchurch – who was also an elected Labour councillor on Redbridge Council – exposed himself twice in one month in different parts of Havering.
He was sacked by Mr Streeting and resigned as a Redbridge councillor after performing a sex act in front of a 13-year-old girl in Romford, then chasing her around the neighbourhood.
After arresting him, police linked him to an earlier offence closer to home in Hornchurch.
He entered the dock at Barkingside Magistrates’ Court on Monday, April 28, in a grey jacket and green trousers. He sat hunched forward, his head down and his hands trembling in his lap.
Prosecutor Jeannel Ambrose said the first incident, on February 9, occurred in Patricia Drive, Hornchurch.
A female dog walker reported a Mini Cooper driving past her. When she encountered it again as she rounded a corner, Gould was sitting with the window open.
“The defendant has exposed his penis and was masturbating,” said Mrs Ambrose.
Feeling “distressed and violated”, the victim took down Gould’s number plate and reported the incident to the police.
A month later, on March 8, Gould struck again, this time against a 13-year-old girl in Romford, who was walking alone in Hainault Road to meet friends on a Saturday lunchtime.
Miss Ambrose said the girl was “followed” after she saw Gould again masturbating with the window open in a small, white car.
He initially followed her in his car, she reported, leaving her in such fear that she hid behind a bush in an effort to escape him.
She then ran into a block of flats to seek help, but nobody came to her aid.
As she left the flats, she saw Gould following her on foot and ran back in the direction she had come from whilst calling her mother.
Gould pleaded guilty to both incidents in March but his sentencing was delayed so the probation service could interview him for a pre-sentence report.
When he arrived for sentencing on Monday, District Judge Paul Donegan initially refused to proceed, saying Gould had refused in his probation interview to fully accept his crimes.
“I’m not content to sentence on the basis of what he says in the pre-sentence report,” he told Gould’s lawyer, Nicholas Jennaway.
“It’s a denial. This offence requires an intention and he denies that intention. He says he just happens to be there and they just happen to pass.”
After leaving court to discuss the judge’s concerns, Gould and Mr Jennaway returned.
“He accepts the prosecution case,” Mr Jennaway told Judge Donegan. He said his client accepted his behaviour had been “unlawful and reprehensible”.
He said Gould had “difficulties in his personal life”, for which he had sought therapy, but which had led him to start viewing pornography involving public exposure.
Despite being a “very shy and introverted person”, he began masturbating in public – a “compulsion” for which he was now “getting specialist counselling”.
On the day of the offence against the 13-year-old girl, he said, Gould had “attended a difficult meeting” and decided to masturbate briefly in his car.
When he realised he had been seen, said Mr Jennaway, he was “in a very, very panicked state”.
“He is looking to talk to her, so he is following her at that point,” he said. “He was just in a state of absolute panic.”
But, he added, it was “entirely understandable that she was in such a state of fear… he apologises profusely.”
He said his knew his career in public service was over, but “fully accepts that he has brought this upon himself”.
Judge Donegan said the second incident was aggravated by “specific targeting of a particularly vulnerable victim, this being a lone, female child aged 13”.
But, he said, although Gould was flagged by probation as a “medium” risk to the public, “the mitigating factors outweigh the aggravative factors”.
He sentenced Gould to 22 weeks in prison, suspended for two years, with an order to carry out rehabilitation activities.
He will spend the first six months on a GPS monitoring tag and be subject to notification requirements for seven years.
He was also given a seven-year Sexual Harm Prevention Order banning him from having any contact or communication with any female under 18.
He was also ordered to pay £239 in costs and surcharges.