4 ideas
Ackroyd treats London as a single living body with appetites, moods, illnesses and a will of its own, rather than a backdrop for human actors. On this view plague, fire, crime and drink are symptoms and recurring bodily behaviours of the city, which lets the historian read events centuries apart as expressions of one continuous character.
Particular districts retain the same function and temperament over hundreds of years regardless of who lives there: Clerkenwell recurs as a seat of radicalism and dissent, St Giles as a pocket of destitution, and Spitalfields as a landing place for successive immigrant groups from Huguenots to Jews to Bangladeshis. The place itself, not the population, seems to carry the pattern, so that newcomers are absorbed into an existing local identity rather than replacing it.
After the Great Fire of 1666 destroyed most of the City of London, Christopher Wren and John Evelyn drew up rational plans for broad avenues, piazzas and a geometric street grid. None was adopted; property owners' claims and the urgency of restarting trade meant the city was rebuilt largely on its old medieval street pattern, now in brick and stone. It is Ackroyd's evidence that London reasserts its own form and resists imposed, planned order.
Instead of a linear narrative, the book groups material under recurring themes such as fire, plague, noise, drink, crime, poverty and children, and within each theme moves freely across periods. Juxtaposing Roman, medieval, Victorian and modern instances of the same phenomenon reveals repetitions and continuities that chronological narrative dilutes, so the past appears as layered and co-present rather than superseded.