Queen is said to have ‘the future’ in Charles, William and George on the balcony to end the anniversary

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Royal sources say the Queen “wants the world to see the heartbeat of her family and the future of the monarchy”. The family is scheduled to appear on the balcony around 5 p.m

The Queen will stand on the balcony of Buckingham Palace alongside her three heirs, Princes Charles, William and George, for the finale of her Platinum Jubilee weekend, it can be announced.

Royal sources say the 96-year-old monarch “wants the world to see the heartbeat of her family and the future of the monarchy” as they wrap up the folk pageant next Sunday.

The family is scheduled to appear on the balcony around 5pm in front of a crowd of 10,000 who have gathered at the mall, with millions more watching on television across the country.

Queens-to-be Camilla and Kate will join their husbands Charles and William on the balcony.

Alongside their son Prince George, eight, William and Kate’s other children Princess Charlotte, seven, and Prince Louis, four, could also appear, but that has not yet been confirmed, they say.

Other members of the royal family, including Princess Anne, the Earl and Countess of Wessex and their children Louise, 18, and James, 14, and Prince Andrew’s daughters, Princesses Beatrice and Eugenie, are expected to watch from the royal box Grandstand at the Queen Victoria Memorial outside the Palace.

Buckingham Palace has remained silent on the plans, but a royal source said: “Her Majesty believes this will send a strong message to the world that despite the family’s trials and tribulations in recent years, those at the very top are united with the work to continue to share their sense of duty and commitment to service to the people of this country and the Commonwealth.”

On Thursday, the Queen traveled by helicopter to her Balmoral estate in Scotland for a short break before the celebrations begin.

Though for some the fun has already begun, big anniversary dinners are taking place across the country. Children and parents at Duncombe Primary School in north London had theirs yesterday amid a blast of red, white and blue.

Sotheby’s in London today marked the anniversary with an exhibition featuring a 1985 portrait of the Queen by Andy Warhol.

But the official anniversary celebrations kick off Thursday at 10am with Trooping the Color.

It ends with the RAF flyby watched by the Royal Family from the balcony of Buckingham Palace.

The Queen has decided that only working royals will join her, meaning Prince Harry and his wife Meghan, and the disgraced Prince Andrew will be absent.

Her Majesty is accompanied by Prince Charles and Camilla, Prince William and Kate, Prince Edward and his wife Sophie, Princess Anne, the Duke and Duchess of Gloucester, the Duke of Kent and Princess Alexandra. The Cambridge and Wessex children are also expected, as is Anne’s husband Tim Laurence.

On Friday, the Queen will attend a Thanksgiving service at St Paul’s Cathedral while she hopes to go to the Epsom Derby with her family on Saturday. She is likely to miss Saturday night’s Buckingham Palace concert in her honor, but other family members will be in attendance.

Next Sunday’s anniversary competition will feature giant marionettes, corgi puppets and a giant 3D wire bust of the Queen. Thousands will take part in the 3km parade through London, including military personnel, hundreds of performers and key workers and 6,000 volunteers.

The £15m competition promises to be a ‘once-in-a-lifetime experience, made by people for people’. It will be in four acts: For Queen and Country; The time of our lives; Let’s party; and happy and glorious.

Organizers have spent months creating a “wave of nostalgia” with Sinclair C5 electric vehicles from the 1980s and seven double-decker buses transporting celebrities from each of the seven decades of the Queen’s reign.

The Time of Our Lives section includes 2,500 performers depicting cultural changes over the past 70 years, a collection of Space Hoppers and Doctor Who Daleks, and a procession of seven different James Bond Aston Martin cars and seven Land Rovers.

Seven JCB excavators will also join the procession as a tribute to the Queen’s late husband, Prince Philip, and his passion for British engineering.

In the “Let’s Celebrate” section, 2,500 performers will portray 12 “chapters” of the Queen’s life, with a nod to her love of horses and corgis.

The pageant follows the route of the coronation procession, moving from Parliament Square up to Trafalgar Square and then down the Mall to Buckingham Palace.

The Platinum Jubilee Pageant will conclude with a rousing performance of the National Anthem conducted by Ed Sheeran and the London Community Gospel Choir, and watched by the Queen on the Palace Balcony.

The Mirror understands the rest of the family would appear “unlikely” if she is unable to appear on the balcony due to ill health.

But a palace insider said: “The Queen looks in splendid form and is very much looking forward to the anniversary celebrations.

“So much planning and effort has gone into ensuring this is a fitting tribute to the Queen’s incredible contribution to public life.”