Kate Middleton and Prince William
Kate Middleton and Prince William travel with this many people for their royal engagements abroad. Pictured: Middleton and Prince William attend the Men's Singles final on day thirteen of the Wimbledon Lawn Tennis Championships at All England Lawn Tennis and Croquet Club on July 15, 2018 in London. Getty Images/Clive Brunskill

The royals usually travel with a big group of people for their royal engagements abroad.

According to Kara Godfrey of Daily Express, the members of the Firm have an entourage whenever they visit other countries. For instance, Prince Charles and Camilla took 14 people while Prince Harry and Meghan Markle flew with 11 people to Dublin.

The Duke and Duchess of Cambridge also follow this. In 2016, the family traveled to Canada with 5-year-old Prince George and 3-year-old Princess Charlotte. On that trip, the family took 12 key members for their royal entourage.

Middleton brought her stylist Natasha Archer along. She also invited her hairdresser Amanda Cook. The children's nanny, Maria Teresa, also joined them to look after the royal children.

Middleton also takes her private secretary Rebecca Deacon who organizes her schedule. She was replaced by Catherine Quinn in 2017.

On the other hand, Prince William also brings his private secretary, Miguel Head. The two have been working together since 2009.

The other key members of the Duke and Duchess of Cambridge's entourage are their press officers Jason Knauf, Katrina McKeever and Charlotte Pool. Whenever Prince William and Middleton travel they will take a tour secretary and logistics manager who arranges the transport and assistance.

Earlier this year, Prince William and Middleton had their first royal trip for 2018 by making an official visit to Norway and Sweden. For the said trip, they took along Quinn, Archer and Amanda Cook Tucker. Knauf, McKeever and Pool were also there.

In related news, Middleton is set to join Prince William in Canada in September. The Duchess was reportedly "upset" for missing the Jordan trip in June.

"She will be thrilled. She loved it here, she really did. She is very upset that I am coming here without her," Prince William said. Middleton was in maternity leave at that time following Prince Louis' birth.

"My wife Catherine is very sorry she cannot be here with me so soon after the birth of our son Louis, but her family remembers very fondly the almost three years she spent here as a child when her father worked for British Airways in Amman," Prince William explained Middleton's absence in a reception he attended.