"Queen Lizzie" did, in fact, circumcise her boys. You've got to remember they were born in the late 1940's and early 1950's and the majority of boys in England were circumcised at that time. As a matter of fact, it was a thing of the upper classes and almost all boys born of parents of means were circumcised. Circumcision of the royal family's males was started by Queen Victoria and of course, everyone wanted to emulate the royals. All of the royal family wanted William and Harry circumcised and Dianna had the guts to stand up to them and say "absolutely not!"
Prior to the 1950's, an intact penis in England was a sign of lower class status. While routine circumcision started here and migrated there, the class distinction started there and migrated here. We were still trying to find medical benefits during that time. We were both wrong but the old beliefs still persist.