Why in the UK in the XIX century. Did social transformations occur through reforms, and not through revolutions?

A feature of the political development of England was the expansion of democracy through peaceful reforms, and not as a result of revolutions, as in France and the United States.
At this time, there was a further development of the parliamentarism system. The role of the cabinet and its head.
increased, and the rights of the monarch and House of Lords were even more limited- In the middle of the XIX century. In England, a bipartisan system was finally formed. The country was successively ruled by two large bourgeois parties, which changed their names and strengthened the governing bodies. The Tories became known as conservatives, and the Whigs adopted the name of the Liberal Party. Despite differences in political orientation, both parties vigorously defended and strengthened the existing system. The ruling circles felt strong pressure from the working class and the petty bourgeoisie, who sought to improve the economic situation and expand political rights. In order to prevent a big shock and maintain power, liberals and conservatives are forced to carry out a series of reforms.
As a result of their implementation, the number of voters increased significantly, although women and poor men did not get the right to vote. The right of workers to strikes was confirmed, and at the beginning of the 20th century, workers began to pay sickness, disability and unemployment benefits.

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