Even at its peak, in the mid-17th century, the Thames freezing at London was less frequent than modern legend sometimes suggests, never exceeding about one year in ten except for four winters between 1649 and 1666.
Selv på højdepunktet i midten af 1600-tallet frøs Themsen i London sjældnere end moderne fortællinger nogle gange angiver, og det var aldrig mere end én gang på ti år, bortset fra fire vintre mellem 1649 og 1666.