Incarceration of criminals for long periods of time was unusual before the 18th century
Before the 18th century, medieval castles had dungeons where rebels or hostages would be kept - but criminals tended to be dealt with in other ways
The idea of imprisoning criminals with a view of reforming them had begun with the development of houses of correction and bridewells in the 16th century - to reform criminals through hard work
Houses of correction and bridewells were very small and only existed in a few places
Most gaols by the 18th century were just places to temporarily hold criminals waiting for punishment , or people who had not yet had their trial
In the 18th century , there were a number of gaols in large towns and cities , like London
In the 18th century , people who debtors rather than criminals were imprisoned as a consequence of owing money - the time spent in gaol did not get the debtors out of the debt they owed
Some debtors who were imprisoned could buy themselves better conditions than other prisoners
In some places, debtors were mixed in the same cells as violent criminals
The father of Charles Dickens the author was imprisoned as debtor in Marshalsea Prison
The father of John Wesley the Methodist preacher was imprisoned as a debtor in Lincoln Gaol
Gaolers charged prisoners , whether they were criminals or debtors, as they were not paid a wage
Prisoners with money could buy themselves better food or bedding
By the middle of the 18th century, there were about 4000 people imprisoned in Britain
The number of people imprisoned in Britain was low , as most criminals were transported to the colonies in America
In the 18th century, there were 3 major changes that put huge pressures on the old system of bridewells and gaols
The American colonies prevented Britain from transporting their criminals to their colonies after war with them in 1776 , which led to their independence
Most judges preferred transportation rather than execution , despite most crimes under the 'Bloody Code' technically being punished by death - so they chose to leave criminals in gaol rather than sending them for execution
The number of criminals increased due to population growth combined with increasing urbanisation
Conditions in prison had never been a concern as there were never many people in them , and if there were, they usually did not stay long
The sudden pressure on the old system of gaols and bridewells highlighted a number of flaws
There were no rules about how prisons should be run - Local responsibility could sometimes be unclear - Existing buildings were not fit for purpose and lacked proper sanitation
In some prison buildings, there was no more than a single room that all prisoners (male, female, young, old) were all kept in
Because some prison buildings only had a single room for all prisoners , they became overcrowded - as a result diseases like typhus ran riot amongst prisoners
It has been estimated that in the late 18th century gaols , 25% of prisoners died every year