Prince William gave a little bit away about his young son in a documentary due to be screened on Sunday.
The 31-year-old laughed off questions about Prince George's legacy and said:
"At the moment, the only legacy I want to pass on to him is to sleep more and maybe not to have to change his nappy quite so many times, but as he gets older I'm sure he'll pick up the bug of conservation."
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The star celebrated his 70th birthday with his family before attending a celebrity-filled bash held in his honour.
Douglas Carswell told ITV's Peston On Sunday he wanted to "support" the government as a "critical friend" but refused to rule out a return.
Several of victims had life-threatening injuries, police said.