The Princess Louise is a fabulous Victorian pub that has one of the best interiors in London. Built in 1872, the pub had a refit in 1892 in which no expense was spared. The decoration is formidable: etched mirrors line the walls, surrounded by polychromatic tiling, elaborate terracotta friezes, patterned ceilings, marble pillars with gilt capitals, tiled floors (mosaics in the corridors) and stained and painted glass. Even the toilets are spectacular. I've posted more photos of the pub over on Flickr.

Examples of etched glass snob screens in the Lamb pub in London. These frosted glass snob screens were popular in the 1890s and hid the customer from the publican when they ordered their drinks, but the hinges still allowed the the bar staff to check on the customers without disturbing their privacy. Here's a video of them in action.