Fr. Hewko is on the right holding the candlestick.
The Dominicans of Avrille are very much there--Fr. Pierre Marie, O.P., the Prior, is standing on the right of Bishop Williamson (as you look at the picture), Fr. Marie-Dominique, O.P. is the smiling face just to the right of Fr. Pierre-Marie, O.P. and just to the left of Fr. Hewko who is holding the candlestick. There are two others in the picture, but I am not sure of their names.
Since the Dominican Fathers hosted this event, they are very much involved.