With the exterior of an old British Victorian, this beautiful London hotel is all modern-day luxury inside. While not a traditional rooftop bar per se, we wouldn't mind knocking back a few with these gorgeous views!
For a drink with a view, try the Madison Bar nr St Paul's. The terrace is on an eyeline with the cathedral dome and there are stunning views out across the skyline to the new Shard and London Eye. If you're looking for a drink after work, arrive before 5.30 as it gets justifiably very busy. Much recommended