
So far, most of the episodes in this series can be easily divided into ‘Princess Diana’ episodes or ‘Margaret Thatcher’ episodes. At one point, in this one, we see Princess Diana (Emma Corrin) struggling through her pregnancy with the future Prince William as her husband, Prince Charles (Josh O’Connor) shouts at her through a door.
But otherwise, this is a Margaret Thatcher episode.

It’s 1982 and when we first see her in this episode, Mrs T (Gillian Anderson)is up in arms, not because of mass unemployment or the recession but because her son Mark (Freddie Fox) has got lost in the Sahara desert while taking part in the Sahara-Dakar Rally. Mark is soon recovered safe and well, but the Queen is surprised to see a more vulnerable side to the Iron Lady in the meantime. She is also surprised by the Prime Minister’s undisguised favouritism for her son Mark over his twin sister Carol (Rebecca Humphries in a role played by Olivia Colman herself in the 2011 film, The Iron Lady). Here, as in reality, Mark is spoilt rotten by his mother, becoming brash and overconfident, despite ultimately being pretty thick. Though genuinely intelligent, Carol, in contrast, comparatively ignored by her headstrong and domineering mother, has low self-esteem, only proving a success later in life as Mark proves a failure.
With some dramatic licence, the Mark Thatcher Sahara story here slightly overlaps with the start of the Falklands War. This wasn’t the case: there was in fact several months’ distance between the two events. It is thus unlikely Thatcher was venting feelings about her son when she reacted to the news of developments in the South Atlantic, as is suggested here.

Thatcher’s favouritism does prompt a teasing suggestion to the Queen from Prince Philip (Tobias Menzies) that all parents have their own favourite amongst their own children. Philip here is upfront in admitting his own favourite is Princess Anne, a prejudice many viewers will doubtless share largely thanks to Erin Doherty’s winning performance.
But who is the Queen’s favourite? Her Royal Highness (played by Olivia Colman who won an Oscar for her portrayal of Queen Anne in the film, The Favourite) arranges a meeting with each of her four children. She is briefed about each of them first, just to ensure she is up to date.
The Queen finds her daughter as dry and grounded as ever. And yet she is clearly miserable: annoyed by how she is portrayed in the media (particularly when contrasted with the newcomer, Diana) and, crucially, unhappily married.
Charles is unhappily married too and turning into a world class bore. The Queen reprimands him for his poor treatment of Diana and for continuing to see Camilla on the side.
For the first time we also get to meet the teenaged Prince Edward (Angus Imrie), who seems arrogant and is bullied at school. Despite being keen to go the Falklands, Prince Andrew (Tom Byrne) also already seems to be developing unsavoury attitudes and is clearly utterly fixated on his own chopper (his helicopter, I mean).
Little wonder as the Queen here concludes: Mark Thatcher may be the one to have gone missing. But it is her own children who seem lost.
