Vile Ronald Young, a former bus driver, had been duped by paedophile hunters Dark Justice into thinking he was swapping messages with an underage female he befriended online last year.

In a series of texts which began in November, the 63-year-old, who claimed he was just 18, claimed he was a “sports teacher”.

He told the “schoolgirl” he wanted her to meet his friends and talked about a sex act involving his pet dog.

Young, who was already on the sex offenders’ register due to past convictions, then travelled from his home in Scotland to meet his young victim.

Young was previously convicted of having indecent images in 2013 and given a community order with a sex offender programme requirement.

In 2014 he was given a suspended jail term for arranging to meet an underage girl at Waterloo station in London. He was made to undergo a further programme and given a sexual harm prevention order.

Young, of