Britain's Duke and Duchess of Cambridge have been branded "celebrities without gravitas" by an award-winning author.
Christopher Lee, who wrote Radio 4 British history programme 'This Sceptred Isle', believes the royal couple should be put in the same category as David and Victoria Beckham.
He told the Daily Mail newspaper: "I don't think they rate with the Beckhams, but I put them in that slot."
The former BBC defence correspondent insists the pair - who welcomed their son Prince George into the world in July last year - don't have the seriousness to be anything other than celebrities.
He explained: "They love bending down and talking to kids and doing ordinary things. They are ordinary, but they are celebrities rather than old fashioned 'don't ask questions, don't touch me' royalty."
The writer previously caused controversy after penning his book 'Monarchy, Past, Present...And Future?', when he claimed Prince George would never become king because he would lack tradition.
However, Christopher believes Prince Charles - the eldest son of Queen Elizabeth and first-in-line to the throne - would make an excellent king and he has more to give than anyone believes.
He said: "[Charles] will be a much, much better King than any of us believe.
"Forget about courtiers squeezing his toothpaste for him, this is a very intelligent man who questions the world around him."
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