That's what I call a dining hall

College Hall in Westminster Abbey, built in the 1370s, is said to be the longest continuously used dining hall in London.  According to what is now usually called a "doubtful tradition," the long chestnut tables were built from wood salvaged from the wreck of the Spanish Armada.  Students at the Westminster School still take their meals there, presumably observing a standard of behavior that would forbid leaving their chewing gum on the underside of the tables. As early as the 16th century, diners aged 18 or more were fined a shilling if they called their companions "foole knave or any other contumelius or slanderus worde."