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
Wrestling legend Jimmy Snuka has been charged over the death of his girlfriend more than 30 years ago.
Rogue landlords are making life unbearable for tens of thousands of tenants in England, according to Shelter.
David Cameron has announced plans for 18 more free schools and vowed to continue to open hundreds more in the next five years.