A PAEDOPHILE has been convicted of sexually assaulting a second boy.

Tobias Moncaster, a former St John’s Ambulance volunteer and Essex University PhD student, denied the charge but it took a jury only an hour to find him guilty by a unanimous verdict.

Moncaster, 40, formerly of Dukes Farm, Layer Marney but now living in Cambridge, already had a history of similar offending.

In 2009 Moncaster admitted several counts of sexual touching against a boy under the age of 13 and a charge of possessing indecent photographs of children.

The offences had taken place mainly in 2008.

A second victim, who had also been assaulted by the paedophile in 2008, came forward in 2013.

Moncaster was finally convicted of the sexual touching on Wednesday at Chelmsford Crown Court, and warned to expect to be sent to jail.

Judge Emma Peters said: “This clearly passes the custody threshold.”

The court heard Moncaster put the child on his knee before sexually abusing him with his hand.

Moncaster denied the incident had taken place.

Following his previous conviction in 2009 Moncaster was given a community order and completed the Thames Valley Sex Offender programme.

He has also been helped by the Lucy Faithful Foundation.

He is not believed to have offended since.

However Judge Peters criticised the defendant for not admitting offences against a second victim seven years ago and for making the victim go through the ordeal of a trial this week.

Moncaster was bailed while a pre-sentence report is carried out.

Moncaster has been banned from any contact with boys aged under-16 or from using the internet or similar devices.

He will be sentenced next month.