Hold your noses this one's going to be a whopper as we delve into the murky depths of the Victorian Thames, which handily doubled as a mass sewer for all the city's waste. This all changed on one fatefully hot summer in 1858 when boiling faeces forced Parliament to act before their nostrils exploded. They passed a bill in just 18 days to build thousands of miles of sewers, designed by Joseph Bazalgette, which are still in use today! Spare a thought for him next time you spend a penny...