Britain's economy during the 1920s was struggling, when the US stock market crashed in October 1929, this further exacerbated the problems facing Britain's economy
Anything badly affected the US economy was bound to affect the rest of the world too
Many countries protected their domestic market by touting foreign imports, the trade of British exports fell dramatically
This resulted in its industrial areas plummeting into poverty
Some businesses crashed while others struggled to survive and production stumped because orders declined
This in turn led to many companies laying off workers, this contributed to the depression because as unemployment rose, the decline in orders fell even more sharply
The collapse of the post-war economic boom in 1921 led to increased competition
The disaster of the Strike in 1926 led to a decline in industry (mining & others)