Prince Philip and Queen Elizabeth II
Queen Elizabeth II and Prince Philip never share a bed when they travel. Pictured: Queen Elizabeth II and Prince Philip arrive in the Royal Carriage on the third day of Royal Ascot 2005, Ladie's Day, at York Racecourse on June 16, 2005 in York, England. Getty Images/Chris Jackson

Queen Elizabeth II and Prince Philip have an odd arrangement as a couple when they travel.

Most couples may opt to share beds and cabins when they travel. However, the Queen and the Duke of Edinburgh never did this.

According to Brian Hoey in his book “Not in Front of the Corgis,” Queen Elizabeth II and Prince Philip had different cabins when they traveled on the Royal Yacht Britannia. The yacht is used for honeymoons, so the crew would rope together the single beds. But, they didn’t have to do this when the Queen and Duke of Edinburgh were on board.

Hoey believes that there are various reasons for Queen Elizabeth II and Prince Philip’s unique arrangement. One of this is their different bedding preferences.

“The Queen likes a longer turn-back on her sheets and blankets and lace trimming on her pillowcases; Prince Philip does not,” Hoey wrote.

Also, while the Queen is very particular with her room and bed, Prince Philip can sleep in whatever weather temperature. He also never used a hot water bottle in his life. In addition, Prince Philip is an early riser and he doesn’t want to disturb his wife in the morning.

Queen Elizabeth II’s cousin, Lady Pamela Hicks, also confirmed Queen Elizabeth II and Prince Philip’s separate bed arrangement. According to her, this is a normal thing for those in the upper class.

“You don’t want to be bothered with snoring or someone flinging a leg around,” she explained.

Prince Philip and Queen Elizabeth II have been married for over 70 years already. Unlike the younger royals Prince William, Kate Middleton, Prince Harry and Meghan Markle, the couple is very discreet. They don’t hold hands in public and never show PDA.

The Queen and the duke are very comfortable and confident in their relationship that they don’t need to spend all their time together. Prince Philip and Her Majesty spend most of their time in separate homes after the 97-year-old royal retired. But they still find time to see each other every so often.