At the conference, she determined, "Going forward, no one gets paid more than the Queen".
It's hard to imagine the queen taking a pay cut, but that's exactly what went down on the initial two seasons of Netflix's The Crown. "However, Hollywood and London may have to reassess whether there should be some kind of SAG pay scale".
However, critics say this could only explain the first season - before Foy won a host of awards and nominations for the role. Also, if Foy had previously worked on an award-winning mini-series, shouldn't her compensation on The Crown reflected that work?
Producers point to Smith's starring role in "Doctor Who" - he played the sci-fi hit's Eleventh Doctor from 2010 to 2014 - as the reason for him making more than Foy.
If you thought the most valuable person in The Crown would be the person who wears the crown, think again - producers have revealed that Doctor Who star Matt Smith was actually paid more for the Netflix series than co-star Claire Foy.
Claire Foy for paid less than Matt Smith for The Crown, despite playing the Queen
Even royals, it seems, may suffer from the gender pay gap. For Season 3, the queen, Prince Philip and everyone else are older, requiring older actors.
Representatives for Smith and Foy did not respond to CNN's multiple requests for comment.
The Crown is one of the most expensive television shows ever produced, costing a reported $130 million (all figures US) for the first season. But whoever it is, Mackie's promise suggests he won't get paid more than Colman.
The ongoing disparity between men and women is reflected in annual lists published by Forbes magazine. Wahlberg later donated his salary to Time's Up, the campaign against workplace sexual misconduct.
Earlier this year it was revealed actress Michelle Williams was paid a fraction of what her All The Money In The World co-star Mark Wahlberg earned for the movie's reshoots.
Warriors vs. Timberwolves Highlights, Steph Curry and Jordan Bell's Return, Damian
Boston led by 10 at halftime before point guard Kyrie Irving left the game with a sore left knee. Gibson reached double-digits in scoring for the 18th time in the last 21 games.