It is very cheap, though. Actually, the number of great historic pubs that Sam Smith's has taken over and made a bit seedy is a bit depressing. There's the Cardinal Newman round the back of Westminster Cathedral, the Citie of Yorke on High Holborn and the Chandos on St Martin's Lane.
I used to drink a bit in the Citteh of Yorke about ten years ago. Change from a fiver for two pints! Not as cheap as that these days though.