Rextail is a restaurant for billionaire children, such as Richie Rich. Its owner, Arcady Novikov, has already opened a restaurant for billionaire men and their spindly billionaire wives — the bonkers fusion Asian/Italian barn Novikov, which travels with its own angry cloud of cigar smoke and identity crisis; so a restaurant for children is the next logical step in the redevelopment of London as a playpen for plutocratic families or cults.