Kate and George are missing out on the royal wedding today, while Prince William is taking it easy

The Prince of Wales is due to attend the wedding of his close friend the Duke of Westminster today. Billionaire aristocrat Hugh Grosvenor, 33, will marry Olivia Henson, 31, at Chester Cathedral.

William will act as an usher at the ceremony, which will begin at noon. His brother, the Duke of Sussex, is not expected to be there after it was agreed that he would not attend.

The wedding comes amid a long-standing rift between the princes. The Princess of Wales, who has stepped out of the limelight while undergoing cancer treatment, is not expected to attend.

The King, the groom’s godfather and the Queen are also not due to attend the ceremony, after attending D-Day commemorations in France on Thursday. The Duke of Westminster is godfather to William’s son, Prince George, as well as, apparently, to Harry’s son, Prince Archie.

Ten-year-old George is not expected to attend the wedding as it falls on a school day. The Duke of Westminster topped The Sunday Times 40 Under 40 Rich list earlier this year, boasting a fortune of £10.1 billion.

His bride, who grew up in London and Oxfordshire, has worked in the sustainable food and drink industry, most recently at Belazu in London. The couple are said to have chosen the wedding venue for its beauty and personal connection with the Duke, whose family home Eaton Hall is nearby.

William and Harry were both ushers at the wedding of his sister, Lady Tamara Grosvenor, at the cathedral in 2004. There will be a private reception at Eaton Hall after the service.

The Duke of Westminster became an instant billionaire when he inherited the title and control of the historic Grosvenor estate at the age of 25, following the death of his father from a heart attack in 2016. His property company, the Grosvenor Group, owns around 300 acres of land in Mayfair and Belgravia, as well as major city center developments such as the ONE shopping center in Liverpool.