They continue to be referred to as the Duke and Duchess of Sussex without the HRH.
Commenting on the poll, one reader fumed: “Strip them down to Mrs and Mr.”
Another blasted: “Definitely. Take the ducal title while they’re at it.
“While they are perhaps obeying the letter of the law by not using the HRH, there is no doubt they are using the ducal title for their own profit.”
A third insisted: “They should lose their duke and duchess titles as well.”
Another wrote: “Of course the infamous couple should lose the HRH – and absolutely everything else from the Dukedom to Prince Henry and his offspring’s places in the line of succession.
“Otherwise their continued titles and places in the line imperil the Monarchy and the stability of the UK itself.
“They are no longer worthy of the titles.”
The Queen made Meghan and Harry the Duke and Duchess of Sussex on the day of their royal wedding.
They have stopped using their HRH styles since stepping back from their senior royal roles a year ago to earn their own money.
The couple, who are expecting their second child, are now living in a mansion in California.
As they launch new careers away from the monarchy, they have signed lucrative deals with Netflix and Spotify to make shows and podcasts.
Meghan and Harry plunged the Royal Family into crisis with their controversial Oprah Winfrey interview, which aired earlier this month.
Express.co.uk polled 10,095 readers on March 31 in an online poll on this website.