Went out one Christmas Eve with a couple of mates, were going to have a couple before meeting with others. The 'spoons at Baker Street was closed so we went across the road, mate went up to the bar and ordered three pints, came back with a thousand yard stare. Three pints had cost him £18.75. Other than interior aesthetics, there is literally no reason to not use spoons when in London. They are slightly more expensive the more central you go but still at least a couple quid cheaper than any other pub, for the very same pint. If there isn't one near wherever you are in London then walk to one, there's scores of them.