Prince Williamjust met a patient who gaveKate Middletonhis seal of approval.

The Prince of Wales, 40, stepped out on Thursday toopen the Oak Cancer Centre at the Royal Marsden, a new cancer research and treatment center. During the visit, William met a man who has been treated there and his wife.

“I have heels on,” William quipped in response.

As she spoke with the royal, the woman praised the U.K.’s National Health Service (NHS) for taking care of her husband for 10 years. He then chimed in, “See these people here? Ugly but they’re good,” prompting a laugh from Prince William.

Kin Cheung - WPA Pool/Getty

Prince William, Prince of Wales, chats with the outpatients as he attends the official opening of the Oak Cancer Centre at The Royal Marsden Hospital on June 8, 2023

The woman then praised the new facilities — but the man turned the conversation to the Princess of Wales. “And your wife’s not bad,” he said. “She’s a nice lady.”

Prince William laughed and said, “He’s a chatty one. The nurses have got their eye on you.”

Prince William and Kate Middleton.Chris Jackson/Getty

Prince William, Prince of Wales and Catherine, Princess of Wales leave St Thomas Church, which has been has been redeveloped to provide support to vulnerable people, during their visit to Wales on September 27, 2022 in Swansea, Wales.

This isn’t the first time that someone has told Prince William that they are a fan of Princess Kate, 41. While meeting well-wishers in 2020 during their visit to Ireland,Angela Moran told PEOPLEabout her encounter with the royal.

“I said to him that I really admired him and Catherine, and he said, ‘Thank you very much,’ " she said. “I said, ‘I love her,’ and he said, ‘I do too — nice of you to say so.' "

Prince William.Kin Cheung - WPA Pool/Getty Images

Prince William, Prince of Wales, attends the official opening of the Oak Cancer Centre at The Royal Marsden Hospital

Kin Cheung - WPA Pool/Getty Images

Nearly three years ago, the royal laid the foundation stone for the Oak Cancer Centre.

Can’t get enough ofPEOPLE’s Royals coverage?Sign up for our free Royals newsletterto get the latest updates on Kate Middleton, Meghan Markle and more!

In a speech, Prince William said he was “delighted” to be there “to celebrate the opening of a remarkable treatment and research facility, that will transform the lives of cancer patients.”

“The Oak Cancer Centre is a major milestone in both The Royal Marsden’s history and the future of early diagnosis,” he added. “I was delighted to launch the appeal for this facility eight years ago and lay the foundation stone in 2020, so I am incredibly proud to be standing here with you all today in this beautiful building.”

He said the center would deliver “truly integrated ‘bench to bedside’ studies that will speed up the development and translation of new personalized treatments — not just for Royal Marsden patients here but for cancer patients worldwide.”

source: people.com