Collins stayed silent as he walked out of the court and got into a waiting car after hearing the verdict.
Detective Inspector Justine Jenkins led the investigation for Hertfordshire Police:
The victim was extremely brave in coming forward to report the offences inflicted upon her. I would urge anyone who is or has been in a similar situation to get in contact with police as soon as possible. I can reassure you that you will be taken seriously and treated with sensitivity.
More top news
Democratic delegates at a speech in Philadelphia booed when Bernie Sanders urged them to get Hillary Clinton elected.
The so-called Islamic State released a statement alleging they had shot down a US warplane over Iraq.
The tree, which suffered previous wind damage in 2011, was made famous through the classic 1994 jailbreak film starring Morgan Freeman.