Olympic champions Mo Farah, Jessica Ennis and Sir Chris Hoy will be among 700 British athletes taking part in a victory parade to mark their achievements at London 2012.
Britain's stars of the Olympic and Paralympic Games will travel through the capital on Monday to celebrate the successes of both teams.
Team GB finished third in the medal table with 29 golds, 17 silvers and 19 bronzes, while the Paralympians have already surpassed their target of 103 medals.
The Greatest Team Parade will see athletes travel on 21 open-top floats, grouped in alphabetical order by their sport.
The first float will include Farah, the Olympic 5,000 and 10,000m winner, followed by heptathlon gold medallist Ennis, with long jump champion Greg Rutherford in the third float.
Team GB's cycling stars Sir Chris Hoy, Jason Kenny, Laura Trott and Victoria Pendleton will be in float seven.
They will be followed by double equestrian gold-medal winner Charlotte Dujardin, rowing champion Katherine Grainger, Ben Ainslie, Britain's most successful Olympic sailor, and triathlon gold medallist Alistair Brownlee.
Paralympians Hannah Cockcroft, Jody Cundy, Sophie Christiansen and Jonnie Peacock will also be taking part.
British Airways will lead a flypast with the Red Arrows during the event after receiving special permission to fly over The Mall. It will pass over the Olympic Park at 3.40pm before reaching The Mall a minute later.
The parade, which has been organised by the London mayor in conjunction with the British Olympic Association and the British Paralympic Association, will include more than 90% of Britain's medal winners.
Organisers have warned there will be extensive road closures around the route of the parade, which starts from Mansion House in the City at 1.30pm.
Members of the public will be able to watch the parade as it travels along Queen Victoria Street and Cannon Street, passing St Paul's Cathedral, continuing along Fleet Street, past Aldwych and into The Strand, before reaching Trafalgar Square.
A big screen at the base of Nelson's Column, with live commentary, will allow spectators to cheer on the athletes as the parade makes its way past Trafalgar Square, a Greater London Authority (GLA) spokesman said.
From Trafalgar Square, the athletes will go through Admiralty Arch into The Mall, travelling down to the Queen Victoria Memorial.
Most roads along the route will close at 11am, while those around Guildhall and Gresham Street in the City are set to shut at 6am.
An area from Admiralty Arch to the Queen Victoria Memorial will be ticket-only and reserved for groups who had made "an invaluable contribution to the Games and the success of our athletes", the GLA said.
This will include 14,000 volunteers, members of the blue light services, military personnel, Team GB and ParalympicsGB coaches and support staff, friends and family of the athletes and schoolchildren from every London borough.