Bought tickets for the West End and fancy a quick bite beforehand but not willing to pay typical West End prices? Try the Montagu Pyke, a large pub in Charing Cross Road owned by the Wetherspoons chain. Because it's owned by a chain, prices are reasonable, and on a Saturday afternoon, it is busy enough to have an atmosphere, but quiet enough that you can talk normally while enjoying prompt service at the bar and on delivery of your food.
Thumbnail photo is by Ewan Munro, on flickr, available under Attribution-ShareAlike 2.0 Generic (CC BY-SA 2.0). Thanks Ewan!