Royals including the Duke and Duchess of Cambridge should not go back to enjoying their previous "jet-set lifestyles" if they want to remain credible on climate change, a royal expert has warned.
Both Prince William and Kate attended the COP26 climate change summit in Glasgow this week alongside Prince Charles and the Duchess of Cornwall.
At the summit, William urged world leaders to "make the impossible possible" and "seize the moment" when it came to tackling climate change.
Similarly, his father Charles has given several speeches at the summit, including one at the opening ceremony, where he called for countries to come together to solve environmental problems.
And royal expert Camilla Tominey says the royals must keep up with their green choices and continue to try to find alternative transport to travelling in private jets.
Writing in the Telegraph's weekly royal newsletter, Your Royal Appointment, she said: "While both the Prince of Wales and the Duke of Cambridge delivered hard-hitting speeches that were well received, they must also now put their words into action by completely dispensing with this hypocritical form of travel from hereon in.
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"To be fair, William and Kate should be commended for taking the train to Scotland on this occasion, while Charles apparently flew from Rome to Glasgow on an RAF flight running on sustainable aviation fuel.
"But if they are to remain credible voices on this totemic issue, they must continue to travel sustainably rather than going back to their previous jet-set lifestyle."
However, William and Charles weren't the only royals to address leaders at COP26.
The Queen also delivered a message via video link, where she paid tribute to her eldest son for his work, as well as her grandson William and late husband Prince Philip.
She said: "It is a source of great pride to me that the leading role my husband played in encouraging people to protect our fragile planet, lives on through the work of our eldest son Charles and his eldest son William.
"I could not be more proud of them."
The 95-year-old monarch had been due to attend the summit in person but pulled out following an overnight stay in hospital.
She is not due to undertake any public engagements until mid-November following a period of rest.
