Prince William and Catherine, the Duchess of Cambridge, currently in Canada but heading to L.A. (PHIL NOBLE/REUTERS)

In other words, for the 42 British actors, directors, producers and other creative types who made the guest-list cut, this is an enormous honor and opportunity. If I may use a Hogwarts analogy here, it’s as if the Sorting Hat of Life has placed every one of these individuals in Gryffindor House.

Who are these lucky few?

Here are just some of the “Brits to Watch” partiers whose names you may know, based on guest-list reports in People and the Hollywood Reporter.

Jessica Brown-Findlay: This 21-year-old actress is one of the stars of the much-talked-about “Downton Abbey.” She plays Lady Sybil Crawley, the likable youngest of the Crawley sisters and a woman who has inspired many awful homemade tribute videos on YouTube..

Joe Cornish: A friend of Edgar Wright (director of “Shaun of the Dead”and “Scott Pilgrim vs. the World”) and the director of “Attack of the Block,” a sci-fi comedy that generated buzz at South by Southwest and has already been released in Britain.

Tom Hughes: One of the stars of the Ricky Gervais ’70s-set comedy “Cemetery Junction,”as well as the BBC series “Silk.”

Harry Lloyd: You know him as Viserys Targaryen on HBO’s “Game of Thrones.” He also plays a younger version of Denis Thatcher, husband of Margaret Thatcher, in the upcoming Meryl Streep film “The Iron Lady.”

Gugu Mbatha-Raw: She was the female lead on the short-lived J.J. Abrams series “Undercovers.” She’s hoping for better luck on TV now that she’s been cast opposite Kiefer Sutherland in the Fox midseason replacement “Touch.”

Talulah Riley: Her biggest roles so far have been in “Pride and Prejudice”and as the wife of PayPal founder Elon Musk; she also scored bit parts in “Inception” and “The Dilemma.”

Juno Temple: She appeared in “Notes on a Scandal” and played Lola in “Atonement,” and will next be seen in “The Three Musketeers.”