Waterloo Tap

Jezza says

This pub from the people behind the Euston Tap etc is in a railway arch (Arch 147 in Sutton Walk) between Waterloo Station and the Royal Festival Hall in what has become quite a beery bit of the South Bank. The 20 keg and 6 cask beers are from breweries of very high quality, kept and served immaculately and offered at very competitive prices. There are a couple of comfy booths along with higher tables; it can get very busy early evening but often quietens down later on. Now with lots of outdoor seating.

Steve says

Another member of the "Tap" family, with this one located in a railway arch close to Waterloo station. Up to 20 beers available, including 2 or 3 cask ales, with something interesting usually available. On the main drag between the station and the river this place can get very busy, but the increased amount of seating outside has improved things no end.