Arrested for Praying Silently RT Documentary

Im just silently praying. I am not protesting a prolife volunteer was again confronted by the police for her silent prayer in front of an abortion clinic in the UK. The previous time Isabel VaughanSpruce was arrested; this time she was given a fixed penalty notice and accused of antisocial behavior. The officer in the video appeals to the access zone, a perimeter around the abortion centre, where its prohibited to demonstrate against abortions. Do the officers have the right to prevent Isabel from praying there