Went to the bar at OXO Tower on south bank for lunch. Fabulous view and we had the ‘express lunch’ for £18 which was a light lunch, beautifully presented and with a choice of drink included (soft/wine/beer etc) Really enjoyed it and staff very helpful. There is also a brasserie and a top end restaurant, all on the same level so views are the same. Outside terrace which is probably very busy in summer. It was snowing when we went so not busy. Booking not required for bar area. Well worth a visit 🙂