I open the door to jazz playing and a heavenly sweet smell in the air. Gorgeous bouquets and blooms carpet the floor in green, pink and white, ready for delivery. Florists are busy hand-tying posies and snipping stems as they chat and wrap. There are urns of lilacs and pails of daisies. I have fallen upon the absolutely charming little florist shop,  Bloomsbury Flowers, on Great Queen Street.     Covent Garden is divided by the main thoroughfare of Long Acre, and here on the southern side sits the piazza and most of the grand buildings, theatres and cultural facilities. It’s behind the curtain, ...