Charles sets out to prove he's not an eccentric crank; Wills wants to achieve his Duke of Edinburgh Gold Award; and Kate is behaving rather strangely...

Camilla warns Charles that the nation thinks he's an eccentric crank. In a bid to prove her wrong, Charles befriends a blind man who doesn't recognise him and can judge his ideas on their merits.

Wills wants his Duke of Edinburgh Gold Award, and Uncle Edward agrees to help him. Once out in open countryside, though, they're kidnapped by an unscrupulous farmer, who sees them as cheap labour.

Meghan thinks Kate is behaving strangely and discovers that she has been replaced by a robot. When confronted by the real Kate and robot Kate, Meghan can't tell them apart.

Meanwhile, Beatrice worries that Eugenie only got her art gallery job because she's a princess. After a boozy lunch, Eugenie discovers an original Banksy on a wall, but is it the real deal? In preparation for becoming King, Charles is given one of the Queen's roles: he's now Defender of the Faith.