Britain's worst ice skating accident occurred on January 16, 1867, at Regent's Park in London. It must have been a fine day, as hundreds of people were skating on the lake.
At about a quarter-past four, when a large number of persons were skating and sliding on the western side of the lake upon an area of water probably of six acres, the ice suddenly, and without the least warning, gave way and broke into thousands of pieces. From one to two hundred persons were immersed.
It's difficult enough to save one person from an icy lake, let alone hundreds. In the end, 41 people died that day, ranging from wealthy businessmen to park workers to mothers and children. The British Newspaper archive has eye-witness accounts of the carnage and its aftermath. -via Strange Company