Abacus

Abacus is so smart and cool and welcoming and relaxed you'll wonder what you ever did before you discovered it. The ambience is smart casual and, with three bars and a club over three floors, there's lots of room for either calm dining or wild nights. Think mood-enhancing lighting, leather cubes and seating, chic mirrors and sleek stylishness, a perfect backdrop for you and your date or friends to spend a great evening. The menu features both nibbly bits, which perfectly complement the enormous drinks list, and proper international dishes for sit-down meals. Try the fish finger sandwich with chunky chips, or do the three-course thing: small plate of seared beef skewers with toasted sesame seeds and oyster sauce, big plate of char-grilled swordfish with rocket salad, and pud of classic lemon tart. Then dance the night away.