Iconic boozing by the Thames

Just opened on the 8th floor of the stock-cube citadel, Oxo's new drinker's made resplendent via vista-abetting glass walls, a slatted ceiling, and scattered yellow/black leather seats, while the mixology includes Casino Royale's original Vesper, its house-made foil the "Double Agent" (gin/ vodka/ plum liqueur/ Chartreuse), and the Bitter Truth herbal liqueur/ vermouth/ Benedictine "Truth Serum", which, if consumed with someone not your girlfriend, will quickly reveal that your loyalty's also compromised.