The Diamond Jubilee weekend will culminate with a day of celebrations in central London on Tuesday 5 June.
The Duke of Edinburgh was due to attend today's event but he is currently in hospital with a bladder infection.
Here is a look at what is in store:
National Service of Thanksgiving
The Queen and many Members of The Royal Family, will attend the National Service of Thanksgiving to Celebrate Her Majesty’s Diamond Jubilee at St Paul's Cathedral on the morning of Tuesday 5th June.
The Service takes place at 10:30 am and will be conducted by the Dean of St Paul’s, The Very Reverend Dr David Ison, and the Archbishop of Canterbury will preach.
- 9.45 am: the Chapter, the Bishop of London and the Archbishop of Canterbury make their way to the Great West Door of the Cathedral.
- 9.50 am: Members of the Royal Family arrive
- 9.55 am: Visiting Representatives of World Faiths leave the Dean’s Aisle and move to their places under the Dome.
- 10.05 am, the Lord Mayor arrives at the foot of the West Steps.
- From 10.10 am: More members of the Royal Family arrive by car at the foot of the West Steps
- 10.25 am: The Prince of Wales and The Duchess of Cornwall, The Duke and Duchess of Cambridge and Prince Henry of Wales arrive.
- 10.28 am: A fanfare is sounded as the Queen arrives at the foot of the West Steps and are conducted to the Great West Door.
- Her Majesty is preceded by the Lord Mayor bearing the Pearl Sword.
- The Queen ise received by the Chapter, the Bishop of London and the Archbishop of Canterbury and, with The Prince of Wales and The Duchess of Cornwall, The Duke and Duchess of Cambridge and Prince Henry of Wales, a procession is formed.
Mansion House: 11:30am
The Queen will then attend a short reception at Mansion House. Other members of The Royal Family will attend a reception at nearby Guildhall.
Diamond Jubilee Lunch: 12:40pm
The Queen will then have a Diamond Jubilee lunch with The Prince of Wales and Duchess of Cornwall at the Palace of Westminster. The Duke and Duchess of Cambridge and Prince Harry will also attend.
The guest list will feature about 700 people. The National Children's Orchestra of Great Britain will perform at the lunch.
Processional Route by Carriage: 14:30pm
After lunch, it's time for some traditional pomp and pageantry! The Queen will head back to Buckingham Palace along a Processional Route in the 1902 State Landau carriage.
The Prince of Wales and The Duchess of Cornwall, The Duke and Duchess of Cambridge and Prince Harry will follow behind in two other carriages.
The three carriages will leave New Palace Yard and process up Whitehall, to Trafalgar Square, through Admiralty Arch and down the Mall, through the Centre Gates at Buckingham Palace
Here is a 3D Google Map of the procession route:
Balcony and Gunfire: 15:30pm
Shortly after their arrival, The Queen and other Members of The Royal Family will appear on the Balcony of Buckingham Palace.
There will be an RAF Flypast and Feu de Joie (“Fire of Joy”) which has been described as a cascade of rifle fire given as a salute by The Queen's Guard from the Forecourt.
Tips for getting around
- If you attending an event, set off early, central London will be extremely busy. So try to get a headstart
- Plan your journey to view the celebrations in advance. You can check transport updates on the Transport for London website or if you travelling in or out of London by train on visit National Rail
- Take a stroll. TFL are encouraging people to take a walk along the new Jubilee Greenway which is 60km long, one kilometre for each year
- If you plan to use Barclays Cycle Hire, check the status of docking stations before you travel
- You can watch ITV coverage of today's event on ITV1 and ITVHD from 08:30am to 16:00pm