It's interesting reading about this on Wikipedia[1]. "The first known frost fair on the River Thames was in AD 695..." " The frost fair of 1814 began on 1 Feb

It's interesting reading about this on Wikipedia[1]. "The first known frost fair on the River Thames was in AD 695..." " The frost fair of 1814 began on 1 February, and lasted four days... As the ice broke up starting on 5 February, several people drowned." But apparently, a milder climate was not the only reason "Frost Fairs" were no longer possible: "This was the last frost fair. The climate was growing milder; old London Bridge was demolished in 1831 and replaced with a new bridge with wider arches, allowing the tide to flow more freely; and the river was embanked in stages during the 19th century, all of which made the river less likely to freeze. There was nearly a frost fair in 1881. Andrews (1887) noted the severe winter of 1881, saying, "it was expected by many that a Frost Fair would once more be held on the Thames". [1] https://en.wikipedia.org/wiki/River_Thames_frost_fairs#The_frost_fairs https://en.wikipedia.org/wiki/River_Thames_frost_fairs#The_f...