HAVING laid her eggs, Edwina Currie has moved on to the City, where she is sponsoring a sober movement called Drinksense. (Next, perhaps, Talksense?). There was no such pussyfooting when Lord Hampden, scion of the Brand banking family, came to the City. My offer of a magnum of Taittinger champagne (through the kindness of Matthew Clark) for a picturesque route across the City has brought from Lord Hampden the evocative letter which appears on page 30. All part of the training. . . . The Taittinger is on its way to him, with the compliments of this picturesque season.