Prince William is allegedly afraid of Prince Harry and Meghan Markle's next move against the royal family. Royal expert Duncan Larcombe believes the Sussexes may make more allegations against the Firm as they continuously drop more bombshell revelations.

Larcombe believes there is more to come from Harry and Markle, which makes William "dreading."

"What do they do next?" he told OK! magazine. "That's a question Prince William is dreading the answer to."

Larcombe suggests Harry should change his tactics soon and the couple has to find a way to do their work in L.A. without using their royal brand. He sees Harry's move as being too obvious - telling the world that he hates his family and the whole system is "rotten to the core."

Larcombe added that by continuously talking about the royal family, Harry and Markle also continually earning from the brand.

"If they spend their whole careers selling that royal brand, they'll never speak to William again," he said.

Harry and Markle officially left the Firm earlier this year. According to Express.co.uk, their decision was confirmed after making several allegations against the royal family in an interview with Oprah Winfrey in March.

Meanwhile, The Mirror noted Harry and Markle's plans to trademark their business and charity empire had been delayed. They recently applied for the U.S. company law to protect their Archewell Foundation fundraising program and podcast Archewell Audio, but the U.S. Patent and Trademark Office asked for more clarification for their applications.

They only have six months to do what is needed or their application will be wasted. This is not the first time that their business plans have been derailed.

They initially wanted to use the Sussex Royal brand as their nonprofit organization, but Buckingham Palace banned them from using the word "royal" after they stepped down as senior royals.

Now, Larcombe said Harry and Markle were both committed to doing a lot of work to get them started after signing a number of lucrative contracts.

"Most of Harry's time is going to be taken up by his mental health work," he said. "He's going to be mentoring people and undoubtedly speaking out more about his own experience."

With that, Larcombe believed Harry would talk badly about the royal family when he started discussing things about the Firm again. He, too, might also lash out once more when the talks about the bullying allegations against his wife begin.