Gill-Webb denies using threatening words or behaviour, with intent to cause harassment, alarm or distress.
He also denies an alternative charge of using threatening, abusive or insulting words or behaviour or disorderly behaviour within the hearing or sight of a person likely to be caused harassment, alarm or distress.
More top news
Police have identified a man and woman found stabbed to death in Fulham.
The Polish Cultural Association say they are "horrified" following abusive graffiti that was posted on their building in Hammersmith.
A time-lapse video has revealed how Ai Weiwei’s artwork Forever was taken apart.