The celebrant was Fr. Richard Biggerstaff, parish priest of St. Pancras (whose website, incidentally, speaks of a parish of Benedict's new liturgical movement, showing prominently a picture of Mass offered in the usus antiquior as well as other photos showing other "Benedictine" liturgical marks such as the "Benedictine arrangement").
Along with parishioners of that parish, children from the parish school of St. Pancras also assisted at the Mass which was offered ad orientem and in the ordinary form.
