Once again, Madonna has the world watching – her style, her body-and dancing to her disco beat. She reflects on her role as revolutionary, how marriage calms her, and why physicality is power. Drones, the private London club Madonna has picked for tea, is a paneled, oaky affair with mirrored concertina screens at the back, suggestive of very grand adulteries, the muffled hum of elegantly wicked luncheon conversation, and supersize glitter balls like small planets suspended from the ceiling. Decorum with a generous scoop of disco stirred in – just as the lady likes it. Madonna is a regular at Drones. She threw a birthday party here for her old man, film director Guy Ritchie-35 guests, four acoustic guitars, and jam sessions until two in the morning. For tea, however, the staff knows to prepare the table she likes at the back, beneath a treacly oil painting which I assume is an original Dufy, but which Madonna assures me (flirtatious smile, huge amused eyes, mobile brows) is abso...