David Benedict in Variety likes the production and is full of praise for Alex's performance:
"The prize, however, goes to Jennings, constantly switching between a plethora of superbly sustained characters. One minute he's a dour, suited Scotsman, the next a pious, white-robed mystic. Best of all is his default position as a New Age guru in beads and a fluting voice not a million miles from Rufus Wainwright."
Full review: Variety
And New York Magazine has the most to say about Alex's performance in "The Queen" so far:
"Even Charles (Alex Jennings) is a figure more to be pitied than censured. He’s always piping up about changing times and the need to be flexible—and you see him through his mother’s eyes, not so much flexible as boneless. I’ve rarely seen body language more amusing than Jennings’s when he directs his chief of staff to make overtures to Blair behind his mother’s back (“The prince feels that you and he are modern men”); he leans away from the phone as if afraid it will turn into Mummy and whack off his head."
Full review: New York Magazine