Welsh singer Charlotte Church has been forced to rethink the location of her upcoming wedding to rugby star Gavin Henson, after police warned their choice of venue is a top spot for having sex in public. The Voice Of An Angel singer chose the 17th century Castell Coch - 'The Red Castle' in Welsh - in Cardiff, for its scenic beauty and proximity to her home nearby. However, the 21-year-old pregnant star is said to be dismayed by police reports of explicit activities occurring in the castle's vicinity. A source tells British newspaper The Sun, "Charlotte has been made aware of the dogging (sex in public) and has concerns. She's talking to Gavin."