Series looking at how London has changed since Charles Booth's survey recording social conditions in 1886, returning to six archetypal London streets.This episode features Caledonian Road, which starts next to King's Cross station and heads north for over a mile. From its beginning, the street has been resolutely working class and when Charles Booth visited he found it a depressing district.

This episode features Portland Road in Notting Hill, the archetypal London banker street, dominated by homes worth as much as £6,000,000. Yet when Booth visited in 1899, it was the worst slum in London and, even today, the bottom five per cent by income in Britain are living on the same street as the top one per cent.

The sixth episode features Arnold Circus, in the East End and the story of a Victorian social experiment that changed Britain. Arnold Circus is home to the first council estate, which opened in 1896. The planning of the estate, from its lack of pubs to the pattern of the brickwork, was deliberate in order to make its residents respectable, as previously the land had played host to a notorious crime-ridden slum.