Dr M's signature made an appearance on an episode which touched on South Africa's apartheid policies. Photo: AP The fourth season of royal drama The Crown sees a number of exciting developments such as the introduction of Princess Diana (Emma Corrin) and British Prime Minister Margaret Thatcher (Gillian Anderson). But Malaysians were particularly excited about one scene, from Episode Eight of the new season. Thatcher was signing a statement about the Commonwealth countries' anti-apartheid stance against South Africa. As Thatcher turned the page to place her signature, the signature of other head of governments were also seen. Among them was former Prime Minister Tun Dr Mahathir Mohamad.