The Choirs enter the darkened hall preceded by the Cross. The Choirs will be in three parties, the first headed by the Cross and the banner of St. George, in red cassocks and white cottas. The second will be headed by the banner of St. Andrew followed by the Choir in black cassocks and white surplices, and the third headed by the banner of St. Patrick with the choir in purple cassocks and white cottas. Then will come the Chaplain to the Bishop of London carrying the crozier in front of the Bishop. The procession moves slowly towards the organ singing 'Lead, Kindly Light,' assemble in crescent formation under the organ enclosed by the bandsmen of the Brigade of Guards in scarlet.