Why did Britain adopt the policy appeasement?

In the 1930’s British and its ally France adopted the policy of appeasement because they wanted to pursue the peace and avoid entering a war, even if it meant making several concessions towards the potential aggressor countries (for e.g. Germany).

The British also adopted this policy due to the possible threat that if any war occurred then their participation would meant huge amount of expenditure and other atrocities caused by the war. Furthermore, Britain was also concerned for the future of her empire. Therefore they preferred to protect their empires by adopting the policy of appeasement.