Mishal Husain

Mishal Husain is not mentioned in any of the provided news articles. The articles discuss the London Book Fair, Nigel Farage's interaction with a journalist, and Amol Rajan's departure from BBC Radio 4's Today program. Therefore, it is impossible to provide a summary about Mishal Husain based on the given information. Without any context or mention of her in the articles, there's no basis to determine her background, current newsworthiness, recent events related to her, or her current relevance.