The Royal Family's most famous environmentally conscious motorist has long been Prince Charles, who boasts an Aston Martin converted to run on wine among his collection.

But it seems he may have some competition on his hands after the Duke and Duchess of Sussex unveiled their new electric car.

The Duke took the wheel of the couple’s Audi E-Tron 55 as he drove his wife the half mile from their home at Frogmore Cottage in the grounds of the royal estate, to the Cloisters beside St George’s Chapel.

It comes after the pair were accused of undermining their environmental credentials by using private planes.

Until last year the Duke drove an automatic four litre Audi RS6 Avant, which was acquired by car dealer Overton Prestige in Derbyshire and listed for £71,900.

At the time it was speculated that he may want to give up the petrol guzzler for an electric car because of their support of environmental campaigns.

The couple have owned the e-tron, which is Audi’s first electric car since June and it is available in the UK for £71,520.

The Duke used the vehicle to make a surprise appearance alongside his wife for a One Young World roundtable discussion with youth ambassadors on initiatives to improve gender equality.