From 1793 to 1815, Britain was almost continuously at war, first with the French Revolutionary government, then against Napoleon 1. One issue Britain faced was the growth in the population. The population increased at a rate of 18%, the fastest known in a ten year period of our history. With the growth in population this meant more land was needed.
Another issue Britain faced was the demand for more industrial goods brought more squalor to the working classes. Politicians at this point were very self-absorbed and didn't really care about the people. This meant that people were forced to live in cramped slums. In addition to this the government did not offer their services to their people.
The French wars brought dislocation, inflation and high prices to trade and industry. As a result of this it meant poor people were far worse off. Heavy taxation also made it hard for the poor to support themselves. These factors led Britain to trade depression.
Not only did the war to France cause problems for Britain, but Britain was also at war with America between 1812 and 1814. This war caused bankruptcy and unemployment and was made worse by harvest failures. Due to this, Great Britain's national debt rose from £238 million in 1793 to £902 million in 1816.
I believe that the main issues Britain was facing in 1815 were due to the french wars because it seems that Britain struggled the most then. Faced with high prices, dislocation, inflation, poor living conditions and rapid growth in population, meaning that people found it hard to support themselves.