Prince Harry and Meghan Markle could lose their titles as Duke and Duchess of Sussex under a law proposed by a Conservative MP.

Isle of Wight MP Bob Seely took aim at the royal couple and has called for Royal Family members who “trash” the institution to be stripped of their titles.

He aims to present his Titles Deprivation 1917 Act Amendment Bill in the next couple of weeks.

Writing for the Mail on Sunday, Mr Seely said: “I’m not a republican and support the monarchy, but after the latest instalment of the couple’s feud with the rest of the Royal Family, I believe that Parliament and the Privy Council should consider a nuclear option.

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“The Duke and Duchess can be Mr and Mrs like the rest of us.

“My bill would allow a vote in Parliament to advise the ancient advisory Privy Council to strip a member of the Royal Family of their titles.

“My aim is simple: if someone doesn’t want to be royal, that is a decision we respect - but they should not keep the titles and privileges if they trash an institution that plays an important part in our nation’s life.”

Mr Seely was not among the 20 MPs drawn out of the Private Members’ Bill ballot and therefore does not have priority to bring forward a proposal.

It means his bill is highly unlikely to make progress through Parliament in its proposed form due to a lack of time to consider it.