Prince Harry had returned to London for the landmark occasion, which took place three months prior to Her Majesty’s passing at the age of 96.

In a blunt statement, Tindall allegedly described Prince Harry’s behaviour to another guest as that of a “b*****d.”

Harry and his wife, Meghan Markle, made only one official appearance with the rest of the family, at a service at St Paul’s Cathedral.

While cameras caught Zara chatting to attendees, her husband chose not to engage with Harry, instead preferring to sit quietly or chat with the Earl of Snowdon.

Jane Owen, celebrity PR specialist and founder of Jane Owen PR, previously told The Mirror that “Hollywood loves Royalty,” observing that both Zara and Mike “can take advantage of that interest and attention.”

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Speaking of Mike and Zara, the expert further added: “If their team knows what they are doing they could potentially become even more popular in time than Meghan and Harry because they don’t have to combat the negative publicity and the mistakes they have made to regain trust and momentum.”

The couple, who married in 2011, have cultivated a down-to-earth image, with Mike pursuing media appearances on television on sports programmes and ITV’s I’m a Celebrity.