JOIN US* 9:03 am The time at which Prince William Arthur Philip Louis was born at St Mary's Hospital Paddington on June 21, 1982. The royal baby weighed 7lb 1-1/2 ounces. Similar details are not given in the biographies supplied by St. James's Palace for bride-to-be Catherine Elizabeth Middleton, who was born on January 9, 1982.
*1,900 The number of people invited to the service at Westminster Abbey. Around 650 people have been invited to a lunchtime reception give by the Queen at Buckingham Palace after the service and about 300 have been invited to a dinner given by Prince Charles that evening.
* 9 The number of "grey" horses that will form the escort for the royal procession. Eleven horses who demonstrated a "good and calm" temperament were selected in advance of the day
*5 The number of horse-drawn carriages in the procession from Westminster Abbey to Buckingham Palace. The first carriage will be the 1902 State Landau or Glass Coach carrying William and Kate
* 5,000 The number of police officers will be on duty in London on Friday to deal with potential threats ranging from international Islamist militants to anarchists and stalkers.
* 20 The height in feet of eight trees - six English Field Maple and two Hornbeam - that will be included in floral displays in the Abbey
* 1910 The year in which luxury London hotel The Goring was opened. Kate Middleton and her family will stay in the hotel the night before the wedding
* 10:51 a.m. The precise time at which Kate Middleton and her father leave the hotel for Westminster Abbey
* 1:25 pm The time at which the couple will appear with the queen on the balcony
* 26 The number of charities that William and Kate will be supporting through the charitable gift fund which they have asked people to donate to instead of giving them a traditional gift. www.royalweddingcharityfund.org
* 140 The number of tonnes of waste that Westminster City Council expects to collect along the route of the processional route