Great Fire of London

The Great Fire of London was a major conflagration that occurred in central London from Sunday 2 September to Wednesday 5 September 1666, gutting the medieval City of London inside the old Roman city wall, while also extending past the wall to the west. The death toll is generally thought to have been relatively small, although some historians have challenged this belief.

The fire started in a bakery in Pudding Lane shortly after midnight on Sunday 2 September, and spread rapidly. The use of the major firefighting technique of the time, the creation of firebreaks by means of removing structures in the fire's path, was critically delayed by the hesitation of the Lord Mayor, Sir Thomas Bloodworth. By the time large-scale demolitions were ordered on Sunday night, the wind had already fanned the bakery fire into a firestorm which defeated such measures. The fire pushed north on Monday into the heart of the City. Order in the streets broke down as rumours arose of suspicious foreigners setting fires. The fears of the homeless focused on the French and Dutch, England's enemies in the ongoing Second Anglo-Dutch War; these substantial immigrant groups became victims of street violence. On Tuesday, the fire spread over nearly the whole city, destroying St Paul's Cathedral and leaping the River Fleet to threaten Charles II's court at Whitehall Palace. Coordinated firefighting efforts were simultaneously getting underway. The battle to put out the fire is considered to have been won by two key factors: the strong east wind dropped, and the Tower of London garrison used gunpowder to create effective firebreaks, halting further spread eastward.

The social and economic problems created by the disaster were overwhelming. Flight from London and settlement elsewhere were strongly encouraged by Charles II, who feared a London rebellion amongst the dispossessed refugees. Various schemes for rebuilding the city were proposed, some of them very radical. After the fire, London was reconstructed on essentially the same medieval street plan, which still exists today.

By the 1660s, London was by far the largest city in Britain and the third largest in the Western world, estimated at 300,000 to 400,000 inhabitants. John Evelyn, contrasting London to the Baroque magnificence of Paris in 1659, called it a "wooden, northern, and inartificial congestion of Houses". By "inartificial", Evelyn meant unplanned and makeshift, the result of organic growth and unregulated urban sprawl. London had become progressively more crowded inside its defensive city wall which dated to Roman times. It had also pushed outwards beyond the wall into extramural settlements such as Shoreditch, Holborn, Cripplegate, Clerkenwell and Southwark, and the Inns of Court. To the West it reached along Strand to the Royal Palace and Abbey at Westminster.

By the late 17th century, the City proper—the area bounded by the city wall and the River Thames—was only a part of London, covering some 700 acres (2.8 km²; 1.1 sq mi), and home to about 80,000 people, or one quarter of London's inhabitants. The City was surrounded by a ring of inner suburbs where most Londoners lived. The City was then, as now, the commercial heart of the capital, and was the largest market and busiest port in England, dominated by the trading and manufacturing classes. The City was traffic-clogged, polluted, and unhealthy, especially after it was hit by a devastating outbreak of bubonic plague in the Plague Year of 1665.

The relationship between the City and the Crown was often tense. The City of London had been a stronghold of republicanism during the English Civil War (1642–1651), and the wealthy and economically dynamic capital still had the potential to be a threat to Charles II, as had been demonstrated by several republican uprisings in London in the early 1660s. The City magistrates were of the generation that had fought in the Civil War, and could remember how Charles I's grab for absolute power had led to that national trauma. They were determined to thwart any similar tendencies in his son, and when the Great Fire threatened the City, they refused the offers that Charles made of soldiers and other resources. Even in such an emergency, the idea of having the unpopular royal troops ordered into the City was political dynamite. By the time that Charles took over command from the ineffectual Lord Mayor, the fire was already out of control.

The city was essentially medieval in its street plan, an overcrowded warren of narrow, winding, cobbled alleys. It had experienced several major fires before 1666, the most recent in 1633. Building with wood and roofing with thatch had been prohibited for centuries, but these cheap materials continued to be used. The only major area built with brick or stone was the wealthy centre of the city, where the mansions of the merchants and brokers stood on spacious lots, surrounded by an inner ring of overcrowded poorer parishes, in which all available building space was used to accommodate the rapidly growing population.

The human habitations were crowded, and their design increased the fire risk. The typical multi-storey timbered London tenement houses had "jetties" (projecting upper floors). They had a narrow footprint at ground level, but maximised their use of land by "encroaching" on the street with the gradually increasing size of their upper storeys. The fire hazard was well perceived when the top jetties all but met across the narrow alleys—"as it does facilitate a conflagration, so does it also hinder the remedy", wrote one observer. In 1661, Charles II issued a proclamation forbidding overhanging windows and jetties, but this was largely ignored by the local government. Charles's next, sharper message in 1665 warned of the risk of fire from the narrowness of the streets and authorised both imprisonment of recalcitrant builders and demolition of dangerous buildings. It too had little impact.