Prince Charles seated beside Queen’s crown for opening of parliament

Britain's heir-to-the-throne Prince Charles and Prince William took centre stage amid the pomp and pageantry of the opening of parliament on Tuesday, replacing the 96-year-old Queen Elizabeth who missed the grand set-piece event with health issues.

With the queen forced to withdraw for the first time in almost 60 years, Charles stepped in to read out the government's legislative agenda at the Palace of Westminster, the first time he has taken on such a major constitutional duty.

The queen, the world's oldest and longest-reigning monarch, has been absent from nearly all high-profile public events in recent months. She was forced to miss the speech due to a recurrence of mobility issues.

Charles, who had attended the opening of parliament alongside his mother in recent years, wore an admiral's uniform to read out the agenda from a throne. While the queen would announce "My Government will," Prince Charles said "Her majesty's government will...".

The State Opening of Parliament is an event of huge pomp and pageantry which traditionally sees the queen travelling to the assembly in a State Coach, escorted by mounted soldiers in ceremonial uniform, while the Imperial State Crown and other regalia travel ahead in a carriage of their own.

The ceremony, which occurs in spring or after a national election, embodies the centuries-old separation of power between the Crown, the elected House of Commons, the House of Lords and the judiciary.

Charles, seated beside the queen's crown and flanked by his eldest son William and his wife Camilla, delivered the speech to lawmakers and lords dressed in red ceremonial robes.

In order to authorise Charles and William to carry out the role on her behalf, the queen had to issue a 'Letters Patent'. A palace source said no other functions had been delegated by Elizabeth. (Reuters)