A pervert with a fetish for schoolgirls who groomed a vulnerable teenager for sex and filmed up skirts has been jailed for seven years and eight months.

Richard Ferguson-Robe was handed an extended sentence after a judge decided he posed a danger in future.

He will have to serve two thirds of the term before he will be considered for release and will be on licence for a further five years.

Ferguson-Robe was 21 but claimed he was 17 when he contacted a 15-year-old girl in an internet chatroom.

She became obsessed with him and he had sex with her after she travelled from the West Midlands to his home in Sittingbourne.

After Ferguson-Robe, now 25, was arrested child sex abuse images were found on his laptop computer.

While on police bail he continued to offend by filming up the skirts of schoolgirls on the streets and in supermarkets in the town on his mobile phone.

Ferguson-Robe, of Dalewood, Sittingbourne, admitted three offences of causing or inciting a child to engage in sexual activity, four of outraging public decency, two of making indecent photographs of a child and four of possessing indecent photographs of a child.

Maidstone Crown Court heard the girl wanted to find a boyfriend and started to chat to Ferguson-Robe in a chatroom.

While using a webcam he asked her if it was all right to perform a sex act. She agreed because she felt appreciated.

“She described that routine happening more and more frequently,” said prosecutor Louise Oakley.

“She came home from school in her uniform and went on webcam, where he was waiting for her.”

Ferguson-Robe also asked the girl to remove clothes and carry out various sex acts.

He progressed to having “phone sex” with her, although she just wanted a normal conversation. “I simply gave in,” she was to tell police.

She ran up a £650 phone bill talking to him. She decided to go to see Ferguson-Robe in March 2011 and was found walking along the M40. She took an overdose.

Miss Oakley said the next month the girl travelled to Sittingbourne. Ferguson-Robe told her to wear her school uniform.

He took her to parks close to where he lived and ogled schoolgirls in short skirts.

Ferguson-Robe arranged to meet a 14-year-old girl. He did so but nothing sexual happened. The other girl saw a conversation between them on his Facebook page.

“I feel he has brainwashed her to make her feel she is nothing without him" - victim's father

He was arrested in October 2012 and indecent film clips of the older girl were found on his laptop, as well as images of other children.

The girl’s father told police Ferguson-Robe had “turned her life upside down”.

He added: “I feel he has brainwashed her to make her feel she is nothing without him.”

He started a relationship with a woman in September 2012 and while looking at his PlayStation she saw indecent images of children. She contacted the police.

Miss Oakley said several clips of films up schoolgirls’ skirts were found on his mobile phone.

A bag of girls’ knickers was discovered at his home.

A sexual offences prevention order was made and Ferguson-Robe’s name will appear on the sex offenders’ register for life.