Clarence House has released the following timings ahead of the big day.
0815-0945: The general congregation arrive at the Great North Door of Westminster Abbey.
0950: Governors-general and prime ministers of realm countries, the Diplomatic Corps, and other distinguished guests arrive at the Abbey.
1010: Prince William and best man Prince Harry leave Clarence House for Westminster Abbey. They arrive at the Abbey's Great West Door at 1015.
1020: Members of foreign royal families arrive at the Abbey from Buckingham Palace.
1020: Kate Middleton's mother Carole and brother James leave the Goring Hotel for the Abbey. They arrive at the Abbey at 1027.
1025: Members of the Royal Family (except those listed below) leave Buckingham Palace for the Abbey, arriving at 1030.