l One of Westminster Abbey's most poignant memorials – the grave of the Unknown Warrior – will be honoured by Kate Middleton on her wedding day.

She is expected to leave her bridal bouquet on the black marble slab that covers the remains of the first world war soldier.

The Queen Mother began the tradition when her wedding posy was left at the grave in 1923 after her wedding to the Duke of York, later George VI.

l The coronation chair – a powerful symbol of the British’s monarchy – will be one of the first things Kate Middleton sees as her wedding service begins at Westminster Abbey.

As she walks through the great west door arm-in-arm with her father Michael Middleton, the ancient artefact will be lit up by spotlights a few metres away.

The ancient artefact has been used in the coronation service of almost every monarch since it was made more than 700 years ago – and it will be brought into service when Kate’s fiance Prince William becomes King.

l St James’s Palace has released some of the names of the 1900 guests invited to the nuptials.

On the guest list is Lance Corporal Martyn Compton of the Household Cavalry Regiment, who was so badly burned in an attack in Afghanistan in 2006 that he “died” three times, as well as losing his ears and nose.

He is a friend and colleague of William, having served alongside him in the Household Cavalry.

Bryn and Emma Parry, founders of the forces’ charity Help For Heroes, which is supported by William, will also be there.

l The list of celebrity guests is headed by David and Victoria Beckham and also features Sir Elton John and partner David Furnish as well as Guy Ritchie, film-maker and former partner of singer, Madonna.

Mario Testino, the engagement photographer, will be there along with singer Joss Stone, who performed at the Concert For Diana – a tribute event to the Princess of Wales.

Friends of the Prince of Wales invited include comic actor Rowan Atkinson and socialite Tara Palmer-Tomkinson (left).

Sarah, the Duchess of York, has not been invited.

l Prime Minister David Cameron, with wife Samantha, will lead the Government’s guest list and will be joined by Deputy Prime Minister Nick Clegg and his wife Miriam. Other senior Cabinet ministers will also attend as well as opposition leader Ed Miliband and fiancee Justine Thornton. Gordon Brown and Tony Blair are not on the guest list.

l Foreign royalty will include everyone from the Sultan of Brunei, left, and the King and Queen of Norway to King Constantine, the former sovereign of Greece, and his wife Queen Anne-Marie. Earl Spencer, Diana’s brother, will also be at the wedding.

l Gay Rights campaigner Peter Tatchell has condemned invitations being extended to royals from Bahrain, Swaziland and Saudi Arabia, saying: “All three royal families preside over severe human rights abuses, including detention without trial, torture and the violent suppression of peaceful protests.”

l As Prince William and his new wife leave Westminster Abbey the historic building’s bells will be rung.

The couple’s marriage will be marked by a full peal only performed for important royal, national or Abbey events or anniversaries.

It was sounded on the Queen Mother’s 100th birthday – August 4, 2001 – and rung half-muffled less than a year later after her funeral on April 9, 2002.