A BLOGGER who exposed a Walter Mitty chief constable has been convicted of child sex offences after being caught out in a police sting.Simon Tilley, 45, was also found guilty of stalking the wife of the detective involved in investigating the sex case, herself also a police officer. He posted a picture of her wedding day and marriage certificate online along with false allegations she was corrupt.He also called the lead detective a sex offender, branded him 'PC Pervert' online and wrote him a letter which 'quite unnecessarily' included a reference to knowing his home address and current partner. Tilley carried out the stalking campaign in a bid 'to derail the criminal proceedings' prosecutors said, and he had obtained the marriage certificates of at least 10 officers, Stafford Crown Court heard. Tilley's earlier blogs on Northamptonshire police were instrumental in the exposure of former chief constable Nick Adderley who falsely claimed he had served in the Falklands and had made other untrue claims on his CV.Adderley, 56, was sacked from his high profile post in 2024 after a disciplinary panel ruled that he had engaged in 'sustained, brazen dishonesty.' He has since been charged with fraud and misconduct in public office following allegations that he made false claims about his military service and educational achievements when applying to work for the police. Simon Tilley, pictured at court, was found guilty of the two child sex offences, perverting the course of justice and one of the stalking allegations. He will be sentenced in September Former Northamptonshire chief constable Nick Adderley, pictured in 2024During his trial, Tilley said he had obtained the marriage certificates to expose what he called malfeasance in Northamptonshire police. He said he had been a victim of sexual violence which had taken the police eight years to investigate and he had been 'fobbed off' by Adderley. But the court heard Tilley had sent explicit messages and pornographic videos to someone he believed was a 13-year-old boy named 'Harry'. Over the course of their chats in 2021, Tilley sent photos of himself naked and messages such as 'you look cute', 'do you want to see my d***?' and 'guess you're at school'.'Harry' was actually a Northamptonshire Police detective taking part in an operation to expose sex offenders operating online.Tilley was arrested at his home address in November 2021.It was following his arrest that he launched 'a campaign to upset and unsettle the officer investigating him, and by extension, disrupt and derail the trial he faced for attempted child sex crimes', prosecutors said.Tilley went on to report the officer in the case as a suspected criminal in July 2024, accusing him of electoral fraud, the court heard.Jurors were told he also targeted the officer's ex-wife, who at the time was also a Northamptonshire Police officer.He allegedly emailed her out of the blue, saying she had investigated a crime he had reported in 2014 and asking for the crime reference number.Tilley later posted a picture of her wedding day and marriage certificate and posted false accusations online that she was corrupt. Mr Scott said the campaign of harassment badly affected the police officers involved'These were not genuine complaints Simon Tilley was making,' he told jurors. Mr Scott continued: 'The defendant on trial is Simon Tilley, not Northamptonshire Police or any of its officers.Tilley had claimed his posts were in order to prevent a crime. Mr Scott said he had a right to free speech but his posts went far further and amounted to criminal harassment and stalking.'No public agency or authority is shielded from criticism, including unwarranted or excessive criticism,' he said.'Of course Simon Tilley, like anybody, had a right to free speech.'But his right to criticise public authorities or those executing public functions, did not extend to a right to research private individuals and post photographs from their private life.'Whatever the truth of the allegations Mr Tilley was making about Northamptonshire police, his behaviour was inherently unreasonable, unconnected to any of the crimes he purported to be investigating and amounted simply to sustained intimidation of these people.'He said Tilley posted 'to make the life of those officers difficult and he did that because he thought it might increase his chances of getting off'.During the trial, the court heard how Tilley's behaviour had affected the officers involved with one describing his behaviour as 'horrendous' and the other citing Tilley as a major reason for leaving the police service.Tilley claimed he knew 'Harry' was an adult posing as a child but 'played along' to try to work out who it was.He said he had joined the gay messaging app Kik using a profile ' Meet with Twinks' -a term used on gay dating apps for young adult males between 18 and 25.Tilley was found guilty of two child sex offences, perverting the course of justice and one count of stalking. He was found not guilty of a second stalking charge. Tilley will be sentenced at Stafford Crown Court on September 18. Judge Jonathan Gosling granted bail but warned that all sentencing options would be open for 'very, very serious offences.' Detective Chief Inspector Nick Cobley said afterwards: 'This has been a particularly complex and challenging case to progress and one which has had a significant impact, not only on officers and staff working across our organisation, but also on their families.'After having been identified, investigated and charged for offences relating to sexual communication with a child, Tilley carried out repeated acts to try and undermine the credibility of the officers connected to the prosecution. His behaviour was persistent and a deliberate attempt to discredit the investigation, cause distraction and create additional work.'Whilst the police are expected to have a slightly higher level of resilience due to the nature of the work they undertake, they are not immune to personal attacks on them or their personal life. They should be able to come to work and not be fearful for their own safety or the safety of their families.