There's a reason why Kate Middleton prefers to give birth at a private facility than a public one. Some royal fans might be wondering why the royals, including Middleton, prefer to get private maternity treatment. St. Mary's Hospital is an NHS-owned healthcare center. However, the Lindo Wing, where the Duchess of Cambridge is set to deliver her third child, offers private healthcare. Middleton delivered Prince George and Princess Charlotte in the same facility in 2013 and 2015, respectively.